Prestressed pipe pile feeding device

Abstract

The application discloses a prestressed pipe pile feeding device, which comprises a prestressed pipe pile rolling correction feeding device. The prestressed pipe pile rolling correction feeding device comprises four pile feeding guide wheels which are in contact with the outer periphery of the prestressed pipe pile for guiding. The four pile feeding guide wheels are arrayed and distributed at equal angles. The rigidity of the outer ring friction body is changed by changing the middle ring inflation body. The rigidity of the pile feeding guide wheels on the side with a smaller vertical prestressed pipe pile is larger, and the rigidity of the pile feeding guide wheels on the side with a larger vertical prestressed pipe pile is smaller. During the process that the prestressed pipe pile continues to press into the soft soil layer, the prestressed pipe pile is in contact with the pile feeding guide wheels with larger rigidity to generate elastic energy for inclination correction, so that the four pile feeding guide wheels correct the prestressed pipe pile in rolling, and the problem that the inclination generated during the process that the prestressed pipe pile is pressed for feeding cannot be corrected is solved.

Description

Technical Field

[0001] This utility model relates to a pile driving device for prestressed pipe piles, belonging to the field of prestressed pipe pile construction technology. Background Technology

[0002] The geology of riverside sites with silt deposits is mostly soft soil. The thickness of the soft soil results in a deeper bedrock layer that can bear the load. The sides of the foundation pit formed by excavating the soft soil downwards will be subjected to a large load from the lateral soft soil. Therefore, in most cases, it is considered to press prestressed pipe piles down into the soft soil to reach the bedrock layer to provide load-bearing capacity for the building structure to be constructed later.

[0003] Although the existing technology (see Chinese Patent Publication No. CN113668493A) can press prestressed pipe piles into soft soil layers using the hydraulic hammer of a hydraulic pile driver, the tilting caused during the pressing and driving process of the prestressed pipe piles cannot be corrected. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a prestressed pipe pile driving device.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a prestressed pipe pile driving device, comprising: A pile driving device for rolling correction and driving of prestressed pipe piles.

[0007] Includes: four pile-driving guide wheels for guiding the outer periphery of the prestressed concrete pipe pile by compression contact, and the four pile-driving guide wheels are distributed at equal angular intervals in an array.

[0008] It also includes a hydraulic hammer for pressing prestressed pipe piles into soft soil layers.

[0009] The pile-driving guide wheel includes an inner ring rigid frame, a middle ring filled with gas, and an outer ring friction body, which are composed of automobile tires.

[0010] The inner ring of the pile driving guide wheel is rotatably mounted with a support arm, and the support arm is fixed with a counterweight force-bearing platform.

[0011] The counterweight support platform has a counterweight guide column fixed on its back top surface. There are two counterweight guide columns spaced apart, and multiple overlapping counterweight blocks are fitted on the two counterweight guide columns.

[0012] The support arm is connected to the counterweight platform via a reinforcing arm.

[0013] The two ends of the reinforcing arm are fixedly connected to the supporting arm and the counterweight force-bearing platform, respectively.

[0014] The beneficial effects of this utility model are as follows: by changing the gas filling of the middle ring to change the stiffness of the outer ring friction body, the driving guide wheel on the side of the prestressed pipe pile with a vertical inclination of less than 10° has a larger stiffness, while the driving guide wheel on the side of the prestressed pipe pile with a vertical inclination of more than 10° has a smaller stiffness. During the process of the prestressed pipe pile continuing to be pressed into the soft soil layer, the prestressed pipe pile comes into contact with the driving guide wheel with a larger stiffness and generates elastic energy to correct the inclination. This allows the four driving guide wheels to roll and correct the driving of the prestressed pipe pile, thus solving the problem that the inclination generated during the pressing and driving process of the prestressed pipe pile cannot be corrected. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the distribution of the four pile-driving guide wheels and the prestressed pipe piles of this utility model; Figure 2 This is a front view schematic diagram of the distribution of the pile-driving guide wheel and the prestressed pipe pile of this utility model; In the diagram: 1-Hydraulic hammer; 2-Prestressed pipe pile; 3-Soft soil layer; 4-Pile driving guide wheel; 41-Inner ring rigid frame; 42-Middle ring gas filling; 43-Outer ring friction body; 5-Support arm; 51-Reinforcing arm; 6-Counterweight force-bearing platform; 61-Counterweight guide column; 62-Counterweight block. Detailed Implementation

[0016] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0017] like Figures 1 to 2 As shown.

[0018] This application discloses a prestressed concrete pipe pile driving device, comprising: A hydraulic hammer 1 applies downward pressure to the top of the prestressed pipe pile 2, pressing the prestressed pipe pile 2 into the soft soil layer 3. The prestressed pipe pile 2, located between the soft soil layer 3 and the hydraulic hammer 1, has rotatable pile-driving guide wheels 4 on its outer periphery. There are three or four pile-driving guide wheels 4, which press against the outer periphery of the prestressed pipe pile 2 for guidance.

[0019] The pile-driving guide wheel 4 includes an inner ring rigid frame 41, a middle ring inflatable 42, and an outer ring friction body 43. The inner ring rigid frame 41, the middle ring inflatable 42, and the outer ring friction body 43 are constructed using automobile tires. The inflation of the middle ring inflatable 42 changes the stiffness of the outer ring friction body 43, and the outer ring friction body 43 presses against the outer periphery of the prestressed concrete pipe pile 2.

[0020] The inner ring frame 41 of the pile driving guide wheel 4 is rotatably mounted with a support arm 5. A counterweight bearing platform 6 is fixed to the support arm 5, and a counterweight guide column 61 is fixed to the top back surface of the counterweight bearing platform 6. Two counterweight guide columns 61 are spaced apart, and multiple overlapping counterweight blocks 62 are fitted onto the two counterweight guide columns 61. The support arm 5 is connected to the counterweight bearing platform 6 via a reinforcing arm 51. The bottom back surface of the counterweight bearing platform 6 is placed in contact with the soft soil layer 3. The two ends of the reinforcing arm are fixedly connected to the support arm 5 and the counterweight bearing platform 6 respectively. The support arm 5 has a telescopic arm section 52, on which the inner ring frame 41 is rotatably mounted. The telescopic arm section 52, when extended or retracted, causes the pile driving guide wheel 4 to shift, correcting the tilt of the prestressed pipe pile 2.

[0021] When the prestressed pipe pile 2 tilts during the process of being pressed into the soft soil layer 3, the stiffness of the outer friction body 43 is changed by altering the gas filling 42 in the middle ring. The guide wheel 4 on the side of the prestressed pipe pile 2 with a vertical tilt of less than 90° has a larger stiffness, while the guide wheel 4 on the side of the prestressed pipe pile 2 with a vertical tilt of more than 90° has a smaller stiffness. As the prestressed pipe pile 2 continues to be pressed into the soft soil layer 3, the prestressed pipe pile 2 comes into contact with the guide wheel 4 with a larger stiffness, generating elastic energy to correct the tilt. This allows the four guide wheels 4 to roll and correct the prestressed pipe pile 2, thus solving the problem that the tilt caused during the pressing and driving process of the prestressed pipe pile cannot be corrected.

[0022] After the prestressed pipe pile 2 is pressed down, first remove the pile driving guide wheel 4, and then remove the counterweight block 62.

Claims

1. A pile driving device for prestressed concrete pipe piles, characterized in that, include: For prestressed pipe piles (2), a rolling correction pile feeding device is used; Includes: a pile-driving guide wheel (4) for guiding the outer periphery of the extrusion contact prestressed pipe pile (2), there are four pile-driving guide wheels (4), and the four pile-driving guide wheels (4) are distributed at equal angles in an array; It also includes a hydraulic hammer (1) for pressing the prestressed pipe pile (2) into the soft soil layer (3); The pile-driving guide wheel (4) includes an inner ring rigid frame (41), a middle ring inflatable (42) and an outer ring friction body (43), which are composed of automobile tires. The inner ring frame (41) of the pile driving guide wheel (4) is rotatably mounted with a support arm (5), and the support arm (5) is fixed with a counterweight force-bearing platform (6).

2. The pile driving device for prestressed pipe piles as described in claim 1, characterized in that: The counterweight support platform (6) has a counterweight guide post (61) fixed on its back top surface. The counterweight guide post (61) consists of two spaced-apart posts, and multiple overlapping counterweight blocks (62) are fitted on the two counterweight guide posts (61).

3. The pile driving device for prestressed pipe piles as described in claim 1, characterized in that: The support arm (5) is connected to the counterweight support platform (6) via a reinforcing arm (51).

4. The pile driving device for prestressed pipe piles as described in claim 3, characterized in that: The two ends of the reinforcing arm are fixedly connected to the supporting arm (5) and the counterweight force-bearing platform (6).

Images