Long hole pile foundation construction platform

Abstract

The utility model relates to the technical field of construction platforms, and particularly discloses a long hole pile foundation construction platform which comprises a construction platform body, and fixing holes are formed in the construction platform body. A plurality of groups of auxiliary positioning mechanisms for ensuring the position precision of the steel casing are arranged around the fixing hole; the auxiliary positioning mechanism comprises connecting frames, and a connecting mechanism used for fixing the connecting frames is arranged between every two adjacent connecting frames. The technical problem that when a steel casing is driven into an existing pile foundation construction platform, auxiliary positioning cannot be conducted on the steel casing, and consequently the position precision of a pile foundation is not high is solved.

Description

Technical Field

[0001] This utility model relates to the field of construction platform technology, and specifically discloses a long-hole pile foundation construction platform. Background Technology

[0002] A pile foundation is a deep foundation consisting of piles and pile caps connecting the pile tops, or a single pile foundation consisting of columns connected to the pile foundation. Pile foundations are an indispensable part of elevated bridge construction. The general process of pile foundation construction is as follows: a steel casing is pressed into a stable soil layer, soil is extracted and a hole is formed using methods such as impact drilling, and the steel casing is then pulled out after the hole is formed. Due to the supporting and sealing effect of the steel casing on the stratum, problems such as collapse, necking, and diameter expansion of the pile hole are avoided.

[0003] When driving in steel casings, workers need to ensure that the casings are always vertical and in the correct position. Existing pile foundation construction platforms cannot assist in positioning the casings during driving, which can easily lead to deviations in the casing position and make it impossible to ensure that the casings are completely vertical to the ground. This results in low positional accuracy of the pile foundation, and the pile foundation cannot be subjected to the same stress as expected during use, thus reducing the service life of the bridge. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a long-hole pile foundation construction platform to solve the technical problem that existing pile foundation construction platforms cannot assist in positioning the steel casing when driving it in, resulting in low positional accuracy of the pile foundation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a long-hole pile foundation construction platform, comprising a construction platform with fixing holes; several sets of auxiliary positioning mechanisms are arranged around the fixing holes to ensure the positional accuracy of the steel casing; each auxiliary positioning mechanism includes a connecting frame, and a connecting mechanism for fixing the connecting frame is provided between every two adjacent sets of connecting frames. In use, workers guide the movement of the steel casing during installation and simultaneously position the steel casing by coordinating the auxiliary positioning mechanism and the connecting mechanism, ensuring the positional accuracy of the steel casing.

[0006] Furthermore, the auxiliary positioning mechanism includes a first guide plate, which is mounted on the connecting frame. A connecting plate is mounted on the connecting frame, and second guide plates are fixedly connected to both sides of the connecting plate. A first limiting block is fixedly connected to the connecting frame and is mounted within the construction platform. The connecting frame is composed of rectangular blocks with different inclination angles at both ends, wherein the lower rectangular block has a greater inclination angle than the upper rectangular block. The first guide plate is mounted on the lower rectangular block, and the connecting plate is mounted on the upper rectangular block. The auxiliary positioning mechanism, through the cooperation of the first and second guide plates, can move the steel casing into the fixed hole while the worker adjusts the positional accuracy of the steel casing. It also guides the movement of the steel casing, reducing the time required for worker adjustment, providing a reference for worker adjustments, and improving worker efficiency.

[0007] Furthermore, two sets of first mating blocks are fixedly connected to the connecting frame, and both sets of first mating blocks are snapped onto the first guide plate; each set of first mating blocks is fitted with a locking block, and a connecting block is provided between the two sets of locking blocks, the connecting block contacting the first guide plate. Through the cooperation of the two sets of first mating blocks and the two sets of locking blocks, the first guide plate is fixedly connected to the connecting frame.

[0008] Furthermore, several sets of connecting mechanisms form a ring around the fixing hole. Each connecting mechanism includes a first fixing sleeve, within which two sets of first arc-shaped frames are slidably fitted. One end of each first arc-shaped frame is located within the first fixing sleeve, and the other end is provided with a second limiting block, which is fitted onto the connecting frame. Two sets of third limiting blocks are also provided within the first fixing sleeve, and these two sets of third limiting blocks are slidably fitted onto the two sets of first arc-shaped frames, respectively. By fixing the several sets of connecting frames together through the connecting mechanism, the connecting frames are ensured to remain vertical at all times, thereby ensuring that the auxiliary positioning mechanism can correctly guide the steel casing and simultaneously increasing the structural strength of the auxiliary positioning mechanism.

[0009] Furthermore, each of the two sets of first arc-shaped frames is fixedly connected to a hinge seat, and each of the two sets of hinge seats is hinged to a hinge block. A first hydraulic cylinder is arranged between the two sets of hinge blocks. The length of the connecting mechanism can be adjusted by the first hydraulic cylinder, thereby facilitating the installation of the connecting mechanism and making it easier for workers to adjust the auxiliary positioning mechanism.

[0010] Furthermore, the first fixed sleeve is equipped with a vertical positioning component, which includes a second fixed sleeve. A movable block is inserted inside the second fixed sleeve, and a second arc-shaped frame is fixedly connected to the movable block. Positioning elements are provided at both ends of the second arc-shaped frame. The first fixed sleeve and the second fixed sleeve are fixedly connected, and a second hydraulic cylinder is provided between the movable block and the second fixed sleeve. The vertical positioning component can detect the position of the steel casing, allowing workers to precisely calibrate the positional accuracy of the steel casing and ensure the positional accuracy of the steel casing after installation.

[0011] Furthermore, the positioning element includes a first fixing block, the center of which is fixedly connected to a second arc-shaped frame. Connecting seats are fixedly connected to both ends of the first fixing block, and a rotatable second fixing block is mounted on each connecting seat. An arc-shaped block is fixedly connected to the second fixing block; the arc-shaped block is in line contact with the steel casing. Workers can observe the contact between the steel casing and the positioning element to determine the state of the steel casing, facilitating adjustments and improving efficiency.

[0012] The working principle and beneficial effects of this solution are as follows:

[0013] In use, the staff first installs the connecting frame around the fixing hole, and then fixes several sets of connecting frames together through the connecting mechanism. The staff then installs several sets of first guide plates and several sets of second guide plates on top of the connecting frame. At this time, the staff completes the installation of the auxiliary positioning mechanism. At this time, several sets of connecting frames are completely vertical, which facilitates the subsequent auxiliary alignment of the steel casing and ensures the installation accuracy of the steel casing.

[0014] When installing the steel casing, the workers first move the steel casing above the fixing hole and then move it downwards. During the movement, the steel casing may first come into contact with the second guide plate, at which point the steel casing slides on the second guide plate and then moves to the first guide plate, guiding the steel casing into the fixing hole. At the same time, the workers adjust the position of the steel casing so that it is completely moved into the fixing hole. Then, the workers control the vertical positioning component to move the positioning element. By observing the contact between the arc block and the steel casing, the workers judge the state of the steel casing, thereby ensuring the positional accuracy of the steel casing.

[0015] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0017] Figure 2 Exploded view of an embodiment;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the connecting mechanism in the embodiment;

[0020] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.

[0021] The following are the markings in the attached diagram: 1. Construction platform; 2. Fixing hole; 3. Connecting frame; 4. First limiting block; 5. First limiting groove; 6. First fixing groove; 7. First mating block; 8. First guide plate; 9. First mating groove; 10. Connecting block; 11. Locking block; 12. Locking groove; 13. Second guide plate; 14. Connecting plate; 15. Second fixing groove; 16. First arc frame; 17. Second limiting block; 18. Second limiting groove; 19. First fixing sleeve; 20. Third limiting block; 21. Third limiting groove; 22. Hinge block; 23. Hinge seat; 24. First hydraulic cylinder; 25. Second fixing sleeve; 26. Movable block; 27. Second hydraulic cylinder; 28. Second arc frame; 29. ​​First fixing block; 30. Connecting seat; 31. Arc block; 32. Second fixing block. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method:

[0023] Example

[0024] like Figures 1 to 5As shown, a long-hole pile foundation construction platform is disclosed, including a construction platform 1. A fixing hole 2 is provided on the construction platform 1. Several sets of auxiliary positioning mechanisms are arranged outside the fixing hole 2, and these mechanisms are evenly distributed in a ring around the fixing hole 2. Each auxiliary positioning mechanism includes a connecting frame 3, which is composed of rectangular blocks with different inclination angles at both ends. The rectangular blocks closer to the fixing hole 2 have a larger inclination angle than those farther from the fixing hole 2. A first limiting block 4 is provided at the bottom of the connecting frame 3. A first limiting groove 5 is provided on the construction platform 1, communicating with the fixing hole 2. The first limiting block 4 is fitted into the first limiting groove 5. A first fixing groove 6 is provided on the connecting frame 3, and a first guide plate 8 is fitted into the first fixing groove 6. The fixed groove 6 is located at the center of the first guide plate 8. Two sets of first mating blocks 7 are fixedly connected in the first fixed groove 6. Two sets of first mating grooves 9 are opened on the first guide plate 8. The two sets of first mating blocks 7 are respectively installed in the two sets of first mating grooves 9. Each set of first mating blocks 7 has a slot 12. Each set of slots 12 has a block 11 installed in it. A connecting block 10 is provided between the two sets of blocks 11. Both ends of the connecting block 10 are fixedly connected to the two sets of blocks 11. One side of the connecting block 10 is in contact with the first guide plate 8. A second fixed groove 15 is opened on the connecting frame 3. A connecting plate 14 is installed in the second fixed groove 15. Both sides of the connecting plate 14 are fixedly connected to the second guide plate 13. The second guide plate 13 is located above the first guide plate 8.

[0025] A connecting mechanism is provided between every two adjacent sets of connecting frames 3. Several sets of connecting mechanisms form a ring around the fixing hole 2. The connecting mechanism includes a first fixing sleeve 19, in which two sets of first arc-shaped frames 16 are slidably fitted. One end of the first arc-shaped frame 16 is located inside the first fixing sleeve 19. Two sets of third limiting blocks 20 are provided inside the first fixing sleeve 19. Each of the two sets of first fixing sleeves 19 has a third limiting groove 21. The two sets of third limiting blocks 20 are slidably fitted into the two sets of third limiting grooves 21 respectively. The other end of each set of first arc-shaped frames 16 is provided with... A second limiting block 17 is provided, and a second limiting groove 18 is provided on the connecting frame 3. The second limiting block 17 is fitted into the second limiting groove 18, and two sets of second limiting blocks 17 can be fitted into the second limiting groove 18 simultaneously. A hinge seat 23 is fixedly connected to each of the two sets of first arc-shaped frames 16, and a hinge block 22 is hinged to each of the two sets of hinge seats 23. A first hydraulic cylinder 24 is provided between the two sets of hinge blocks 22. The fixed end of the first hydraulic cylinder 24 is fixedly connected to one set of hinge blocks 22 by bolts, and the telescopic end of the first hydraulic cylinder 24 is fixedly connected to the other set of hinge blocks 22. Figure 2 and Figure 4 As shown.

[0026] A vertical positioning component is provided on the first fixed sleeve 19. The vertical positioning component includes a second fixed sleeve 25, which is fixedly connected to the first fixed sleeve 19. A movable block 26 is installed inside the second fixed sleeve 25. A second hydraulic cylinder 27 is provided inside the second fixed sleeve 25. The fixed end of the second hydraulic cylinder 27 is fixedly connected to the second fixed sleeve 25 by bolts, and the telescopic end of the second hydraulic cylinder 27 is fixedly connected to the movable block 26. A second arc-shaped frame 28 is provided on the movable block 26, with both ends of the second arc-shaped frame 28 having... A positioning element is provided, including a first fixing block 29, which is fixedly connected to a second arc-shaped frame 28. The center of the first fixing block 29 is connected to the second arc-shaped frame 28. Connecting seats 30 are provided at both ends of the first fixing block 29, and rotatable second fixing blocks 32 are provided on the connecting seats 30. Arc-shaped blocks 31 are fixedly connected to the second fixing blocks 32, contacting the first fixing block 29 and the steel casing. The opening of the arc-shaped blocks 31 faces away from the steel casing. Figure 4 and Figure 5 As shown.

[0027] In practice

[0028] In use, the operator first installs the auxiliary positioning mechanism around the fixing hole 2. Then, the operator moves the connecting frame 3 to the fixing hole 2, aligning the first limiting block 4 with the first limiting groove 5. Next, the operator moves the connecting frame 3 horizontally until the first limiting block 4 is engaged in the first limiting groove 5, completing the initial fixing of the connecting frame 3. The operator then fixes several sets of connecting frames 3 around the fixing hole 2 in sequence. Finally, the operator connects these sets of connecting frames 3 using the connecting mechanism. Next, the operator first installs the first guide plate 8 on the connecting frame 3, engaging the first guide plate 8 in the first mating groove 9, and simultaneously engaging the first mating block 7 in the first mating groove 9. Then, the operator moves the connecting frame... Move block 10 horizontally so that the two sets of locking blocks 11 are aligned with the corresponding locking slots 12. Then move the connecting block 10 horizontally so that the two sets of locking blocks 11 are respectively locked in the two sets of locking slots 12. At this time, the connecting block 10 contacts the first guide plate 8 and fixes the first guide plate 8 on the connecting frame 3. Then the worker moves the connecting plate 14 and the two sets of second guide plates 13 to the top of the connecting frame 3, and at the same time aligns the connecting plate 14 with the second fixing slot 15. The worker moves the connecting plate 14 downward until the connecting plate 14 is locked in the second fixing slot 15. Repeat this process to fix several sets of first guide plates 8 and several sets of second guide plates 13 on the corresponding connecting frame 3. At this time, the worker completes the installation of the auxiliary positioning mechanism.

[0029] When installing the connecting mechanism, since several sets of connecting frames 3 are only initially fixed, they may be slightly tilted as they are not vertical. At this point, the worker moves the connecting mechanism between two sets of connecting frames 3, then activates the first hydraulic cylinder 24. The telescopic end of the first hydraulic cylinder 24 extends, driving the two sets of hinge blocks 22 to move. The hinge blocks 22 rotate around the hinge seat 23, which in turn moves the hinge seat 23 and the first arc frame 16. The first arc frame 16 moves within the third limiting block 20, causing the third limiting block 20 to slide within the corresponding third limiting groove 21, increasing the distance between the two sets of second limiting blocks 17. Once the distance between the two sets of second limiting blocks 17 is appropriate, the worker stops the first hydraulic cylinder 24 and then moves the connecting mechanism to respectively engage the two sets of second limiting blocks 17 with the two adjacent sets of second limiting blocks. Within the positioning groove 18, the second limiting block 17 can move horizontally within the second limiting groove 18. Then, the operator starts the first hydraulic cylinder 24, and the telescopic end of the first hydraulic cylinder 24 retracts. The first hydraulic cylinder 24 drives the two sets of first arc-shaped frames 16 to slide within the first fixed sleeve 19. The first arc-shaped frames 16 drive the second limiting block 17 to slide within the second limiting groove 18 until both sets of second limiting blocks 17 slide to one end of the second limiting groove 18. At this time, the first arc-shaped frame 16 continues to move. The first arc-shaped frame 16 cooperates with the second limiting block 17 and the second limiting groove 18 through the second limiting block 17, driving the connecting frame 3 to move and rotate slightly until the two sets of corresponding connecting frames 3 are completely vertical. Then, the operator stops the first hydraulic cylinder 24. This process is repeated to fix several sets of connecting mechanisms between several sets of connecting frames 3, while ensuring that several sets of connecting frames 3 are in a vertical state.

[0030] The worker then moves the steel casing above the fixing hole 2 and moves it downwards. Because the steel casing is not perfectly vertically aligned with the fixing hole 2, there is a deviation between them. The steel casing may first contact the second guide plate 13 and slide on it. Simultaneously, the worker adjusts the position of the steel casing, allowing it to continue moving slowly downwards. Once the steel casing separates from the second guide plate 13, it will contact the first guide plate 8 and slide on it, guiding it into the fixing hole 2. The worker continues to adjust the position of the steel casing. When the steel casing is fully inside the fixing hole 2, the worker activates the second hydraulic cylinder 27. The telescopic end of the second hydraulic cylinder 27, carrying the movable block 26, moves towards the second fixing hole 2. The sleeve 25 moves within the casing, and the movable block 26 drives the second arc-shaped frame 28 and the positioning element to move until the positioning element contacts the steel casing. Since the positioning element contains two sets of arc-shaped blocks 31 distributed vertically, and the opening of the arc-shaped blocks 31 faces away from the steel casing, the arc-shaped blocks 31 are in line contact with the steel casing. Several sets of positioning elements form a complete circle. Therefore, when the steel casing is in the correct position, several sets of arc-shaped blocks 31 located on the same horizontal plane will all contact the steel casing. When the steel casing is completely vertical, the arc-shaped blocks 31 located in the same vertical plane will contact the steel casing. The staff can observe whether the arc-shaped blocks 31 are in contact with the steel casing and the contact situation, and judge whether the steel casing is completely vertical and whether it is in the designated position, thereby ensuring the positional accuracy of the steel casing after it is pressed into the soil layer.

[0031] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A long-hole pile foundation construction platform, characterized in that: Includes a construction platform, wherein fixing holes are provided on the construction platform; Several sets of auxiliary positioning mechanisms are provided around the fixing hole to ensure the positional accuracy of the steel casing; The auxiliary positioning mechanism includes a connecting frame, and a connecting mechanism for fixing the connecting frame is provided between every two adjacent sets of connecting frames.

2. The long-hole pile foundation construction platform according to claim 1, characterized in that: The auxiliary positioning mechanism includes a first guide plate, which is snapped onto the connecting frame. A connecting plate is snapped onto the connecting frame. Second guide plates are fixedly connected to both sides of the connecting plate. A first limiting block is fixedly connected to the connecting frame. The first limiting block is snapped into the construction platform. The connecting frame is composed of rectangular blocks with different inclination angles at both ends, wherein the lower rectangular block has a greater inclination angle than the upper rectangular block. The first guide plate is mounted on the lower rectangular block, and the connecting plate is mounted on the upper rectangular block.

3. The long-hole pile foundation construction platform according to claim 2, characterized in that: Two sets of first mating blocks are fixedly connected to the connecting frame, and both sets of first mating blocks are snapped onto the first guide plate. Both sets of the first mating blocks are fitted with locking blocks, and a connecting block is provided between the two sets of locking blocks. The connecting block is in contact with the first guide plate.

4. The long-hole pile foundation construction platform according to claim 3, characterized in that: Several sets of the connecting mechanisms form a ring around the fixing hole. The connecting mechanism includes a first fixing sleeve. Two sets of first arc-shaped frames are slidably fitted inside the first fixing sleeve. One end of the first arc-shaped frame is located inside the first fixing sleeve, and the other end is provided with a second limiting block. The second limiting block is fitted onto the connecting frame. The first fixed sleeve is provided with two sets of third limiting blocks, and the two sets of third limiting blocks are respectively slidably locked onto the two sets of the first arc-shaped frame.

5. The long-hole pile foundation construction platform according to claim 4, characterized in that: Both sets of the first arc-shaped frame are fixedly connected with hinge seats, both sets of hinge seats are hinged with hinge blocks, and a first hydraulic cylinder is arranged between the two sets of hinge blocks.

6. The long-hole pile foundation construction platform according to claim 5, characterized in that: The first fixed sleeve is provided with a vertical positioning component, the vertical positioning component includes a second fixed sleeve, a movable block is inserted inside the second fixed sleeve, a second arc-shaped frame is fixedly connected to the movable block, and positioning elements are provided at both ends of the second arc-shaped frame; The first fixed sleeve is fixedly connected to the second fixed sleeve, and a second hydraulic cylinder is provided between the movable block and the second fixed sleeve.

7. The long-hole pile foundation construction platform according to claim 6, characterized in that: The positioning element includes a first fixing block, the center of which is fixedly connected to a second arc-shaped frame. Both ends of the first fixing block are fixedly connected to connecting seats. A rotatable second fixing block is provided on the connecting seats. An arc-shaped block is fixedly connected to the second fixing block. The arc-shaped block is in line contact with the steel casing.

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