Anti-deviation device for precast pile foundation

Abstract

The utility model relates to the technical field of pile foundations, in particular to a precast pile foundation deviation preventing device which comprises a support, a rotary drum and a counting assembly. The support is fixed to the ground. The rotary drum is rotatably connected to the support, the axis of the rotary drum is horizontally arranged, the rotary drum is used for abutting against the precast pile so that the rotary drum can rotate along with sinking of the precast pile, and the portion, making contact with the precast pile, of the rotary drum is kept relatively static. The counting assembly is installed on the support and used for calculating the number of turns of rotation of the rotary drum when the precast pile sinks, and the product of the perimeter of the outer diameter of the cross section of the rotary drum and the number of turns is the theoretical sinking depth of the precast pile. By comparing the theoretical sinking depth of the precast pile with the actual sinking depth of the precast pile controlled by the crane, perpendicularity correction can be conveniently conducted on the precast pile, and manpower input is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pile foundations, and in particular to a prefabricated pile foundation anti-deviation device. Background Art

[0002] A pile foundation consists of piles buried in the ground and a cap. Its purpose is to transfer loads to a deep, well-supported soil layer to meet bearing capacity and settlement requirements. Pile foundations offer a high bearing capacity, capable of withstanding both vertical and horizontal loads, uplift and vibration, making them the most widely used form of deep foundation.

[0003] Pile foundations can be divided into prefabricated piles and cast-in-place piles according to the construction method. Steel pipe piles are a type of prefabricated piles. Steel pipe piles are generally made in multiple sections. The crane lifts the first section of the steel pipe pile. After it is initially placed in place, the surveyors and construction workers will verify the position and verticality of the steel pipe piles. After confirmation, static pressure pile sinking is carried out. During the static pressure pile sinking process, surveyors are required to use theodolites and total stations to measure the verticality of the steel pipe piles in real time, and make corrections when necessary. The splicing of two adjacent sections of prefabricated piles is manually assisted by welding and vertical correction. However, using theodolites and total stations to verify the verticality of the steel pipe piles in real time during the sinking process is relatively labor-intensive. Utility Model Content

[0004] In order to facilitate the vertical deviation correction of precast piles and reduce manpower input, the present application provides a precast pile foundation anti-deviation device.

[0005] This application provides a prefabricated pile foundation anti-deviation device, which adopts the following technical solution:

[0006] A prefabricated pile foundation anti-deviation device, comprising:

[0007] A bracket, used for fixing to the ground;

[0008] a rotating drum rotatably connected to the bracket, the axis of the rotating drum being horizontally arranged, the rotating drum being used to contact the precast piles so that the rotating drum rotates as the precast piles sink, and the contact portion between the rotating drum and the precast piles remains relatively stationary; and

[0009] A counting assembly is installed on the bracket, and is used to count the number of revolutions of the rotating drum when the precast pile sinks. The product of the outer diameter circumference of the cross section of the rotating drum and the number of revolutions is the theoretical depth of the sinking of the precast pile.

[0010] Optionally, the counting assembly includes a protrusion, a rangefinder and a counter, the protrusion is fixed on the outer wall of the rotating drum, and the protrusion is arranged away from the precast piles, the rangefinder is connected to the bracket, and the rangefinder is used to measure the length of the outer wall of the rotating drum from the rangefinder. When the rotating drum rotates, the protrusion is intermittently located between the rotating drum and the rangefinder, and each time the rangefinder detects the protrusion, the counter counts up by one.

[0011] Optionally, the counting components are provided in two groups and are distributed at both ends of the rotating drum.

[0012] Optionally, anti-slip grooves are provided on the outer wall of the rotating drum.

[0013] Optionally, the bracket includes a fixed frame and a movable frame, the fixed frame is used to be fixed to the ground, the movable frame is slidably connected to the fixed frame, and an elastic member is provided on the fixed frame, the elastic member is used to press against the movable frame, and the elastic member is used to drive the movable frame to move toward the precast pile.

[0014] Optionally, a sliding groove is provided on the top of the fixed frame, a sliding block is fixedly connected to the movable frame, and the sliding block is slidably arranged in the sliding groove.

[0015] Optionally, the elastic member is a spring, which is arranged in the sliding groove, one end of the spring is fixedly connected to the inner wall of the sliding groove, and the other end is pressed against the slider, and the spring is located on the side of the slider away from the rotating drum.

[0016] Optionally, a sealing plate is fixed on the movable frame, the sealing plate seals the opening of the sliding groove, and the sealing plate slides and fits on the fixed frame.

[0017] Optionally, the interior of the drum is hollow.

[0018] Optionally, the fixing bracket is a trapezoidal bracket that is narrow at the top and wide at the bottom.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. During the sinking of the precast pile, a horizontal rotating drum is used to contact the vertical precast pile, generating static friction between the precast pile and the rotating drum, causing the rotating drum to rotate while keeping the contact area between the rotating drum and the precast pile stationary. This allows the theoretical depth of the precast pile to be calculated by multiplying the outer diameter of the rotating drum's cross section by the number of turns. The actual depth of the precast pile sunk by the crane is then compared with the theoretical depth. When the actual depth is equal to the theoretical depth, the precast pile remains vertical, and the construction meets the standards. When the actual depth is less than the theoretical depth, the precast pile deviates, requiring immediate correction of the precast pile's verticality. This facilitates the correction of the precast pile's verticality, reduces manpower input, and improves construction quality.

[0021] 2. The counting component includes a protrusion, a distance meter and a counter. The protrusion is detected by the distance meter. Every time the drum rotates one circle, the protrusion is detected once by the distance meter, so that the counter can accumulate the number of rotations of the drum.

[0022] 3. The bracket consists of a fixed frame and a movable frame. When driving precast piles in sections, the movable frame can be pushed to separate the rotating drum from the pile to facilitate welding of the joints between adjacent sections. After welding is complete, an elastic member drives the movable frame back into position, allowing the rotating drum to re-engage the pile. The movable frame facilitates welding of precast piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the precast pile foundation anti-deviation device in an embodiment of the present application.

[0024] Figure 2 It is a structural schematic diagram of the counting component and the rotating drum in the embodiment of the present application.

[0025] Figure 3 It is a structural diagram of the fixed frame, movable frame and slider in the embodiment of the present application.

[0026] Description of reference numerals:

[0027] 100. Precast pile; 1. Bracket; 2. Rotating drum; 3. Counting assembly; 31. Protrusion; 32. Distance meter; 4. Fixed frame; 41. Bottom plate; 42. First side plate; 43. Second side plate; 44. Top plate; 441. Sliding groove; 5. Movable frame; 51. Sliding block; 6. Elastic member; 7. Sealing plate. DETAILED DESCRIPTION

[0028] It should be understood that although the terms "first," "second," "third," etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. In addition, the terms "vertical," "horizontal," "upper," "lower," and similar expressions used in this application are referenced to the positional relationships in the accompanying drawings and do not represent expressions of the only embodiment.

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] Reference Figure 1 、 Figure 2 The embodiment of the present application discloses a precast pile foundation anti-deviation device, which is characterized by including a bracket 1, a rotating drum 2 and a counting component 3.

[0031] Reference Figure 1 The bracket 1 is used to be fixed to the ground. Specifically, the bracket 1 includes a fixed frame 4 and a movable frame 5. The fixed frame 4 is used to be fixed to the ground, and the movable frame 5 is slidably connected to the fixed frame 4. In order to ensure the stability of the fixed frame 4, the fixed frame 4 is a trapezoidal bracket 1 that is narrow at the top and wide at the bottom. Furthermore, the fixed frame 4 includes a bottom plate 41, a first side plate 42, a second side plate 43 and a top plate 44. The bottom plate 41 can be fixed to the ground paved with steel plates by bolts, or the bottom plate 41 can be directly fixed to the soil foundation. The bottom plate 41 and the top plate 44 are both horizontally arranged, and the top plate 44 is located above the bottom plate 41. The first side plate 42 and the second side plate 43 are both inclinedly arranged, and the bottoms of the first side plate 42 and the second side plate 43 are both fixedly connected to the upper surface of the bottom plate 41, and the tops of the first side plate 42 and the second side plate 43 are both fixedly connected to the lower surface of the top plate 44. The distance between the bottom of the first side plate 42 and the bottom of the second side plate 43 is a first distance, and the distance between the top of the first side plate 42 and the top of the second side plate 43 is a second distance. The first distance is greater than the second distance.

[0032] Reference Figure 1 、 Figure 3 The top of the fixed frame 4 is provided with a sliding groove 441. Specifically, the sliding groove 441 is provided on the upper surface of the top plate 44. The movable frame 5 is a U-shaped bracket 1. The bottom of the movable frame 5 is fixedly connected to a slider 51, which slides in the sliding groove 441. The movable frame 5 can be moved toward or away from the precast pile 100 by pushing it.

[0033] Reference Figure 1 、 Figure 3The fixed frame 4 is provided with an elastic member 6, which is used to press against the movable frame 5, thereby driving the movable frame 5 toward the precast pile 100. Specifically, the elastic member 6 is a spring, and is disposed within the sliding groove 441. Multiple springs are provided, and in this embodiment, three springs are used as an example. One end of the spring is fixedly connected to the inner wall of the sliding groove 441, and the other end is fixedly connected to the slider 51. The spring is disposed on the side of the slider 51 away from the rotating drum 2.

[0034] Reference Figure 1 、 Figure 3 To prevent dust from falling into the sliding groove 441, a sealing plate 7 is fixedly connected to the movable frame 5. The sealing plate 7 slides against the fixed frame 4. Specifically, the sealing plate 7 slides against the upper surface of the top plate 44, thereby sealing the opening of the sliding groove 441. Furthermore, construction personnel can determine whether the rotating drum 2 has moved by observing the distance the sealing plate 7 slides relative to the top plate 44, thereby assessing the stability of the precast pile 100's sinking.

[0035] Reference Figure 1 The rotating drum 2 is rotatably connected to the bracket 1, specifically, the rotating drum 2 is rotatably connected to the movable frame 5. During the use of the precast pile 100 pile foundation anti-deviation device, the axis of the rotating drum 2 is horizontally arranged.

[0036] Reference Figure 1 Before securing the support 1 to the ground, a crane hoists the precast pile 100 to the sinking position for preliminary positioning. The rotating drum 2 is then brought into contact with the precast pile 100, and the support 1 is secured. This allows the rotating drum 2 to rotate as the precast pile 100 sinks, while the contact area between the rotating drum 2 and the precast pile 100 remains relatively stationary, generating static friction between the two. To prevent slippage between the rotating drum 2 and the precast pile 100, the outer wall of the rotating drum 2 is engraved with anti-slip grooves. To reduce the weight of the rotating drum 2, the interior of the rotating drum 2 is hollow.

[0037] Reference Figure 1 、 Figure 2 Counting assembly 3 is mounted on bracket 1, specifically, on movable frame 5. Counting assembly 3 is used to count the number of revolutions of drum 2 as precast pile 100 sinks. By multiplying the circumference of the drum 2's cross section by the number of revolutions, the theoretical sinking depth of precast pile 100 can be calculated. To ensure accurate counting, two sets of counting assemblies 3 are provided.

[0038] Reference Figure 2The counting assembly 3 includes a protrusion 31, a rangefinder 32, and a counter. The protrusion 31 is fixed to the outer wall of the drum 2. Since the counting assembly 3 is provided in two groups, the two protrusions 31 are arranged at the two ends of the drum 2 so that the protrusions 31 are arranged away from the precast piles 100. Therefore, the protrusions 31 do not interfere with the precast piles 100 during the rotation of the drum 2. The rangefinder 32 is connected to the movable frame 5. Specifically, the rangefinder 32 is an infrared rangefinder 32, which is not easily affected by ambient sunlight. The rangefinder 32 is used to measure the distance between the outer wall of the drum 2 and the rangefinder 32. When the drum 2 rotates, the protrusion 31 is intermittently located between the drum 2 and the rangefinder 32. The rangefinder 32 is electrically connected to the counter. Each time the rangefinder 32 detects a protrusion 31, the counter counts by one.

[0039] The implementation principle of the precast pile foundation anti-deviation device of the embodiment of the present application is as follows: during the sinking process of the precast pile 100, a horizontal rotating drum 2 is used to abut against the vertical precast pile 100, so that static friction is generated between the precast pile 100 and the rotating drum 2, so that the precast pile 100 drives the rotating drum 2 to rotate, and the contact part of the rotating drum 2 and the precast pile 100 remains stationary to prevent the two from slipping. In this way, the theoretical depth of the sinking of the precast pile 100 can be calculated by multiplying the circumference of the cross section of the rotating drum 2 by the number of turns. The actual depth of the sinking of the precast pile 100 by the crane is then compared with the theoretical depth. When the actual depth is equal to the theoretical depth, the precast pile 100 always remains vertical, so that the construction meets the standard. When the actual depth is less than the theoretical depth, the precast pile 100 deviates, and the verticality of the precast pile 100 needs to be corrected immediately. Thus, the effect of facilitating the verticality correction of the precast pile 100 is achieved, while reducing manpower input and improving construction quality.

[0040] When driving the precast pile 100 in sections, in order to facilitate the welding of the joint parts of two adjacent sections of the precast pile 100, the movable frame 5 can be pushed in the direction away from the precast pile 100 to separate the rotating drum 2 from the precast pile 100, and then welding can be carried out to avoid the rotating drum 2 affecting the welding operation. After the welding is completed, the movable frame 5 is released, and the elastic member 6 drives the movable frame 5 to reset, so that the rotating drum 2 abuts the precast pile 100 again. The setting of the movable frame 5 achieves the effect of facilitating the welding of the precast pile 100. At the same time, the movable frame 5 is not rigidly connected to the fixed frame 4, so that the slight vibration occurring during the construction of the precast pile 100 is not easy to damage the bracket 1, thereby improving the service life of the anti-deviation device of the precast pile 100 foundation.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A precast pile foundation anti-deviation device, characterized in that: include: A bracket (1) for fixing to the ground; a rotating drum (2) rotatably connected to the bracket (1), the axis of the rotating drum (2) being arranged horizontally, the rotating drum (2) being used to contact the precast pile (100), so that the rotating drum (2) rotates as the precast pile (100) sinks, and the contact portion of the rotating drum (2) and the precast pile (100) remains relatively stationary; and A counting assembly (3) is mounted on the bracket (1), and is used to count the number of revolutions of the rotating drum (2) when the precast pile (100) sinks. The product of the outer diameter circumference of the cross section of the rotating drum (2) and the number of revolutions is the theoretical depth of the sinking of the precast pile (100).

2. The precast pile foundation anti-deviation device according to claim 1, characterized in that: The counting assembly (3) comprises a protrusion (31), a distance meter (32) and a counter. The protrusion (31) is fixed on the outer wall of the rotating drum (2), and the protrusion (31) is arranged away from the prefabricated pile (100). The distance meter (32) is connected to the bracket (1). The distance meter (32) is used to measure the distance between the outer wall of the rotating drum (2) and the distance meter (32). When the rotating drum (2) rotates, the protrusion (31) is intermittently located between the rotating drum (2) and the distance meter (32). Whenever the distance meter (32) detects the protrusion (31), the counter counts up by one.

3. The precast pile foundation anti-deviation device according to claim 2, characterized in that: The counting components (3) are provided in two groups and are distributed at both ends of the rotating drum (2).

4. The precast pile foundation anti-deviation device according to claim 1, characterized in that: Anti-slip grooves are provided on the outer wall of the rotating drum (2).

5. The precast pile foundation anti-deviation device according to claim 1, characterized in that: The bracket (1) comprises a fixed frame (4) and a movable frame (5), wherein the fixed frame (4) is used to be fixed on the ground, and the movable frame (5) is slidably connected to the fixed frame (4), and an elastic member (6) is provided on the fixed frame (4), wherein the elastic member (6) is used to press against the movable frame (5), and the elastic member (6) is used to drive the movable frame (5) to move toward the precast pile (100).

6. The precast pile foundation anti-deviation device according to claim 5, characterized in that: A sliding groove (441) is provided on the top of the fixed frame (4), and a sliding block (51) is fixedly connected to the movable frame (5), and the sliding block (51) is slidably arranged in the sliding groove (441).

7. The precast pile foundation anti-deviation device according to claim 6, characterized in that: The elastic member (6) is a spring, which is arranged in the sliding groove (441). One end of the spring is fixedly connected to the inner wall of the sliding groove (441), and the other end is pressed against the slider (51). The spring is located on the side of the slider (51) away from the rotating drum (2).

8. The precast pile foundation anti-deviation device according to claim 6, characterized in that: A sealing plate (7) is fixed on the movable frame (5), the sealing plate (7) seals the opening of the sliding groove (441), and the sealing plate (7) is slidably fitted on the fixed frame (4).

9. The precast pile foundation anti-deviation device according to claim 1, characterized in that: The interior of the rotating drum (2) is hollow.

10. The precast pile foundation anti-deviation device according to claim 5, characterized in that: The fixing frame (4) is a trapezoidal bracket (1) that is narrow at the top and wide at the bottom.

Images