PHC friction pile and pile sinking device

Abstract

The application relates to the technical field of PHC pipe pile and discloses a PHC friction pile and a pile sinking device, wherein the PHC friction pile comprises a hollow PHC friction pile body, and a groove is arranged on the outer periphery of the PHC friction pile body; the pile sinking device comprises a turnover adjusting mechanism, a conveying mechanism and a rotary adjusting mechanism; the turnover adjusting mechanism can be turned over around the top side of the conveying mechanism to adjust the angle of the rotary adjusting mechanism; the rotary adjusting mechanism is used for adjusting the horizontal rotation angle of a stand; and the clamping and deviation rectifying mechanism is used for clamping the PHC friction pile and can rectify the PHC friction pile. In the application, the contact area of the pipe pile and the soil layer is increased, thereby increasing the single-pile bearing capacity, and the pipe material is saved; the clamping and deviation rectifying mechanism can be horizontally turned over and vertically rotated by the turnover adjusting mechanism and the rotary adjusting mechanism, the PHC friction pile can be conveniently and quickly clamped, the pile sinking position can be quickly aligned, and the clamping and deviation rectifying mechanism can also play a guiding and deviation rectifying role in the pile sinking process.

Description

Technical Field

[0001] This invention relates to the field of PHC pipe pile technology, and more particularly to a PHC friction pile and a pile driving device. Background Technology

[0002] PHC pipe piles, or prestressed high-strength concrete pipe piles, are hollow cylindrical precast concrete components with a standard section length of 10m and a diameter of 300mm to 800mm. PHC pipe piles are a common type of pile foundation. Due to their generally short length, they are often used as friction piles. Conventional PHC pipe piles are typically hollow and circular, but their contact area with the soil layer is generally small, which prevents them from fully utilizing their friction pile performance.

[0003] A search revealed a PHC pipe pile structure in publication number CN215669474U, comprising a hollow pile body containing a reinforcing cage and concrete. The reinforcing cage includes stirrups and longitudinal main reinforcement. Multiple internal support mechanisms are spaced along the longitudinal direction of the pile body within its inner cavity. Each internal support mechanism includes an internal support frame and eight connecting steel plates. The internal support frame includes one long strut and six short struts, each short strut being half the length of the long strut. The inner ends of the six short struts are fixed to the middle of the long strut, forming a star-shaped internal support frame. The eight connecting steel plates are connected one-to-one to the two ends of the long strut and the outer ends of the six short struts, and are welded to the longitudinal main reinforcement within the pile body. This design improves the shear bearing capacity and flexural ductility of the PHC pipe pile, thereby enhancing its seismic performance.

[0004] The aforementioned application includes an internal support structure consisting of an internal support frame and eight connecting steel plates. While this can improve the shear bearing capacity and structural bending ductility of PHC pipe piles, it also increases production costs and results in a relatively high price. Summary of the Invention

[0005] To overcome the above deficiencies, this invention provides a PHC friction pile and a pile driving device, aiming to improve the problem of high production cost of existing PHC pipe piles. It discloses an irregularly shaped PHC friction pile, which can increase the contact area between the pile foundation and the soil layer, thereby increasing the bearing capacity, while saving materials and reducing costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pile driving device, comprising a flipping adjustment mechanism, a transport mechanism, and a rotation adjustment mechanism. The transport mechanism is used to carry and transport the flipping adjustment mechanism and the rotation adjustment mechanism. One side of the flipping adjustment mechanism is connected to the top of the transport mechanism. The flipping adjustment mechanism can flip around the top side of the transport mechanism to adjust the angle of the rotation adjustment mechanism. A column is fixedly connected to the top of the rotation adjustment mechanism. The rotation adjustment mechanism is used to adjust the horizontal rotation angle of the column. A lifting adjustment mechanism is installed on the outside of the column. A clamping and correction mechanism is installed at the bottom of the column and on one side of the lifting and correction mechanism. The clamping and correction mechanism is used to clamp the PHC friction pile and can correct the PHC friction pile. It is also used to sense the pressure generated by the PHC friction pile in different directions.

[0007] Preferably, the transport mechanism includes a frame and a second hydraulic cylinder. The second hydraulic cylinder is fixedly connected to each of the four bottom corners of the frame. A hook seat is fixedly connected to one side of the frame. The tilting adjustment mechanism is installed on the other side of the frame. A wheel is provided at the bottom of the frame.

[0008] Preferably, the tilting adjustment mechanism includes a first hydraulic cylinder and a tilting mounting bracket. One end of the first hydraulic cylinder is rotatably connected to the side of the vehicle frame near the coupler seat, and the output end of the first hydraulic cylinder is rotatably connected to one side of the tilting mounting bracket. A tilting support seat is rotatably connected to the middle of the tilting mounting bracket. The tilting support seat is fixed in an inclined shape on the side of the vehicle frame away from the coupler seat. A tilting mounting bracket is fixedly connected to the other side of the tilting mounting bracket. A rotation adjustment mechanism is installed on the outer side of the tilting mounting bracket and the other side of the tilting mounting bracket.

[0009] Preferably, the rotation adjustment mechanism includes a first motor and a gear ring. The first motor is externally fixedly connected to a bracket, the bottom of which is fixedly connected to the other side of the flip mounting bracket. The output end of the first motor is fixedly connected to a first gear, the outer side of which is meshed with a gear ring. The inside of the gear ring is connected to the outer wall of the flip mounting base via a slewing bearing. The top of the gear ring is fixedly connected to a support frame, and the top of the support frame is fixedly connected to the column.

[0010] Preferably, a rack is fixedly connected to the outer side of the column, and a connecting clamp is sleeved at the bottom of the column. The lifting adjustment mechanism includes a lifting box, a second motor is fixedly connected to one side of the outer wall of the lifting box, a worm gear is fixedly connected to the output end of the second motor, a worm wheel is meshed with the outer side of the worm gear, a rotating rod is fixedly connected to the middle of the worm wheel, one end of the rotating rod is rotatably connected to the inner wall of the lifting box, a second gear is fixedly connected to the outer wall of the rotating rod, a third gear is meshed with the outer side of the second gear, and the middle of the third gear is rotatably connected to the inner wall of the lifting box through another rotating rod. Sliding holes are provided on both sides of the outer wall of the lifting box, the outer side of the column passes through the sliding holes, the outer side of the third gear is meshed with one side of the rack, and the clamping and correction mechanism is fixedly connected to both the outer wall of the lifting box and one side of the connecting clamp.

[0011] Preferably, the clamping and correction mechanism includes a clamping mounting box. A third hydraulic cylinder is fixedly connected to one side of the clamping mounting box. The output end of the third hydraulic cylinder passes through the clamping mounting box and extends to be fixedly connected to a main clamping shaft. A frustum is fixedly connected to the outer side of the main clamping shaft. Two mounting shafts are fixedly connected to the other side of the clamping mounting box. A clamping arm is rotatably connected to the outer side of each of the two mounting shafts. A roller is rotatably connected to one end of each clamping arm, and the outer side of the roller is in close contact with the outer wall of the frustum. A roller seat is fixedly connected to the other end of each clamping arm and one end of the main clamping shaft. A roller is rotatably connected to the middle of the roller seat. The outer side of the main clamping shaft is slidably connected to the outer wall of the clamping mounting box. Limiting sleeves are fixedly connected to both sides of the inside of the clamping mounting box. The inside of the limiting sleeves is slidably connected to the outer side of the main clamping shaft. A through hole is provided on the outer wall of the clamping mounting box at the mounting shaft.

[0012] Preferably, a pressure sensor is provided at one end of the clamping arm and at one end of the main clamping shaft.

[0013] A PHC friction pile includes a hollow PHC friction pile body, and the outer periphery of the PHC friction pile body is provided with a groove.

[0014] Preferably, the groove extends through the head and tail of the PHC friction pile body, and the groove is an arc-shaped groove evenly distributed on the outside of the PHC friction pile body.

[0015] Preferably, the cross-sectional shape of the groove is arc-shaped, triangular, or rectangular.

[0016] The present invention has the following beneficial effects:

[0017] 1. In this invention, a regular arc shape is excavated on the outer periphery of the conventional PHC pipe pile to increase the contact area between the pipe pile and the soil layer, thereby increasing the bearing capacity of a single pile and saving pipe material.

[0018] 2. In this invention, the clamping and correction mechanism can be adjusted horizontally and vertically by flipping and rotating the adjustment mechanism, thereby facilitating and quickly adjusting the angle and position of the PHC friction pile, improving pile driving efficiency and reducing the danger of pile driving operation.

[0019] 3. In this invention, the flipping mounting frame of the flipping adjustment mechanism can rotate around the flipping support base. The rotation adjustment mechanism can rotate and adjust the clamping and correction mechanism, which can conveniently clamp the PHC friction pile, quickly align the pile driving position, and also play a correction role during the pile driving process.

[0020] 4. In this invention, when picking up PHC friction piles, it can adapt to clamping PHC friction piles of different lengths, and can also control the clamping and correction mechanism to clamp at different positions on the PHC friction piles. During the pile driving process, as the PHC friction pile sinks, the clamping and correction mechanism can move down simultaneously, improving the guiding effect and reducing the occurrence of deviation.

[0021] 5. In this invention, a pressure sensor is used to detect the pressure on the clamping arm and the main clamping shaft, maintain the thrust of the third hydraulic cylinder, and move the clamping correction mechanism up and down. If the pressure at different positions of the PHC friction pile is basically equal, it means that there is no tilt. This allows for quick checking of whether the pile is tilted and timely correction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a standard PHC pipe pile cross-section;

[0023] Figure 2 This is a schematic diagram of the cross-section of a PHC friction pile proposed in this invention;

[0024] Figure 3 This is a perspective view of a PHC friction pile and pile driving device proposed in this invention.

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 for Figure 3 A front view of the pile driving device in the middle;

[0027] Figure 6 This is a schematic diagram of the internal structure of the lifting box of the present invention;

[0028] Figure 7 for Figure 3 Right view of the pile driving device in the middle;

[0029] Figure 8 for Figure 3 Top view of the structure;

[0030] Figure 9 This is a schematic diagram of the clamping and correction mechanism proposed in this invention;

[0031] Figure 10 This is a schematic diagram of the internal structure of the clamping and mounting box proposed in this invention.

[0032] Legend:

[0033] 1. PHC friction pile body; 101. Groove; 2. Tilting adjustment mechanism; 201. First hydraulic cylinder; 202. Tilting mounting frame; 203. Tilting support seat; 204. Tilting mounting seat; 3. Transportation mechanism; 301. Frame; 302. Second hydraulic cylinder; 303. Wheel; 304. Coupler seat; 4. Rotation adjustment mechanism; 401. Bracket; 402. First motor; 403. First gear; 404. Gear ring; 405. Support frame; 5. Connecting clamp; 6. Lifting and adjusting mechanism; 601. Lifting box; 602. Sliding hole; 603. Second motor; 604. Worm gear; 605. Worm wheel; 606. Second gear; 607. Third gear; 7. Column; 701. Rack; 8. Clamping and correction mechanism; 801. Clamping mounting box; 802. Third hydraulic cylinder; 803. Main clamping shaft; 804. Frustum; 805. Clamping arm; 806. Mounting shaft; 807. Roller seat; 808. Limit sleeve; 9. Pressure sensor. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1:

[0036] refer to Figures 1-2 This embodiment uses a PHC pipe pile with a diameter of 60cm and an inner cavity diameter of 40cm as an example to evaluate the advantages of the present invention.

[0037] like Figure 1 As shown, the friction force of a conventional PHC pipe pile is the maximum bearing capacity it can withstand. The formula for calculating the friction force is: Ra=u∑qsik*li;

[0038] Where: Ra—vertical bearing capacity of a single pile; qsik—ultimate lateral resistance around the pile; li—thickness of the i-th layer of soil and rock; u—pile perimeter.

[0039] The circumference of a standard PHC post in the example above is: U = 2πR = 2 * 3.14 * 30 = 188.4 cm;

[0040] The vertical bearing capacity of a single pile is: Ra1=188.4∑qsik*li;

[0041] Meanwhile, the volume of material used for a pipe pile of length L is: V1=(3.14*302-3.14*202)*L=1570L;

[0042] The present invention discloses a PHC friction pile, such as Figure 2 As shown, the PHC friction pile of this embodiment includes a hollow PHC friction pile body 1, and a groove 101 is provided on the outer periphery of the PHC friction pile body 1.

[0043] The groove 101 penetrates the head and tail of the PHC friction pile body 1, and the groove 101 is an arc-shaped groove evenly distributed on the outside of the PHC friction pile body 1.

[0044] The cross-sectional shape of the groove 101 can be arc-shaped, triangular, or rectangular.

[0045] In this embodiment, the outer diameter of the PHC friction pile body 1 is 60cm and the inner diameter is 40cm. Based on the conventional PHC pipe pile, a regular arc shape is excavated on the outer periphery to increase the contact area between the pipe pile and the soil layer, thereby increasing the bearing capacity of a single pile and saving pipe material.

[0046] Calculations show that the irregularly shaped PHC friction pile disclosed in this invention has a perimeter of 206.07 cm and a cross-sectional area of ​​1,396.74 cm². 2 The single pile bearing capacity Ra2 and the pipe volume V2 are respectively: Ra2=206.07∑qsik*li;V2=1396.74L.

[0047] Comparison of the PHC friction pile of this invention with conventional PHC pipe piles:

[0048] (1) Bearing capacity:

[0049] Ra2Ra1=206.07∑qsik*li / 188.4∑qsik*li=1.094;

[0050] (2) Volume of materials used:

[0051] V2 / V1=1396.74L / 1570L=0.890;

[0052] From the above comparison, we can see that:

[0053] Compared to conventional PHC pipe piles, the PHC friction pile of this invention only requires 89% of its material to achieve 109.4% of its bearing capacity, and has excellent application prospects.

[0054] Example 2:

[0055] like Figure 2-10 As shown, the pile driving device of this embodiment includes a flipping adjustment mechanism 2, a transport mechanism 3, and a rotation adjustment mechanism 4. The transport mechanism 3 is used to carry and transport the flipping adjustment mechanism 2 and the rotation adjustment mechanism 4. One side of the flipping adjustment mechanism 2 is connected to the top of the transport mechanism 3. The flipping adjustment mechanism 2 can flip around the top side of the transport mechanism 3 to adjust the angle of the rotation adjustment mechanism 4. The top of the rotation adjustment mechanism 4 is fixedly connected to a column 7. The rotation adjustment mechanism 4 is used to adjust the horizontal rotation angle of the column 7. A lifting adjustment mechanism 6 is installed on the outside of the column 7. A clamping and correction mechanism 8 is installed on the bottom of the column 7 and one side of the lifting and correction mechanism 6. The clamping and correction mechanism 8 is used to clamp the PHC friction pile and can correct the PHC friction pile. At the same time, it is used to sense the pressure generated by the PHC friction pile in different directions.

[0056] Two clamping and correction mechanisms 8 are used to clamp the PHC friction pile. These mechanisms can sense the pressure generated by the PHC friction pile in different directions, thus determining whether the pile is tilted. A lifting and adjusting mechanism 6 allows one of the clamping and correction mechanisms 8 to be raised or lowered, enabling timely correction of the PHC friction pile. Furthermore, the clamping and correction mechanism 8 acts as a guide, facilitating pile driving. Existing technology typically involves tying the PHC friction pile with ropes and then using a crane to lift the ropes, a cumbersome and sometimes dangerous method requiring manual control of the pile. This invention, through a flipping adjustment mechanism 2 and a rotating adjustment mechanism 4, allows for horizontal flipping and vertical rotation adjustment of the clamping and correction mechanism 8, facilitating rapid adjustment of the PHC friction pile, improving pile driving efficiency, and reducing the danger of pile driving operations.

[0057] refer to Figure 7 The transport mechanism 3 includes a frame 301 and a second hydraulic cylinder 302. The second hydraulic cylinder 302 is fixedly connected to the four corners of the bottom of the frame 301. A hook seat 304 is fixedly connected to one side of the frame 301. A tilting adjustment mechanism 2 is installed on the other side of the frame 301. A wheel 303 is provided at the bottom of the frame 301.

[0058] The second hydraulic cylinder 302 can be used to fix the frame 301 to the destination, improving stability, and the coupler seat 304 facilitates the connection of the frame 301 to external machinery.

[0059] The tilting adjustment mechanism 2 includes a first hydraulic cylinder 201 and a tilting mounting bracket 202. One end of the first hydraulic cylinder 201 is rotatably connected to the side of the frame 301 near the coupler seat 304. The output end of the first hydraulic cylinder 201 is rotatably connected to one side of the tilting mounting bracket 202. A tilting support seat 203 is rotatably connected to the middle of the tilting mounting bracket 202. The tilting support seat 203 is fixed in an inclined shape on the side of the frame 301 away from the coupler seat 304. A tilting mounting base 204 is fixedly connected to the other side of the tilting mounting bracket 202. The rotation adjustment mechanism 4 is installed on the outer side of the tilting mounting base 204 and the other side of the tilting mounting bracket 202.

[0060] The first hydraulic cylinder 201 can drive the flipping mounting frame 202 to rotate 90 degrees around the flipping support 203, and then use the clamping and correction mechanism 8 to clamp the PHC friction pile. The rotation adjustment mechanism 4 can rotate and adjust the clamping and correction mechanism 8, which can facilitate the clamping of the PHC friction pile and the adjustment of the position of the PHC friction pile. At the same time, by adjusting the angle of the flipping mounting frame 202, the PHC friction pile can be kept perpendicular to the ground. With the help of the rotation adjustment mechanism 4, the pile driving position can be quickly aligned, and it can also play a correction role during the pile driving process.

[0061] The rotation adjustment mechanism 4 includes a first motor 402 and a gear ring 404. The first motor 402 is externally fixedly connected to a bracket 401. The bottom of the bracket 401 is fixedly connected to the other side of the flip mounting bracket 202. The output end of the first motor 402 is fixedly connected to a first gear 403. The outer side of the first gear 403 is meshed with the gear ring 404. The inside of the gear ring 404 is connected to the outer wall of the flip mounting bracket 204 through a slewing bearing. The top of the gear ring 404 is fixedly connected to a support frame 405. The top of the support frame 405 is fixedly connected to a column 7.

[0062] The first motor 402 drives the first gear 403 to rotate, which in turn drives the gear ring 404 to rotate, further driving the support frame 405 to rotate, causing the column 7 to rotate. Since two clamping and correction mechanisms 8 are installed on the column 7, the clamping and correction mechanisms 8 can clamp the PHC friction pile. Before driving the pile, the installation location of the PHC friction pile can be adjusted. When the clamping and correction mechanisms 8 pick up the PHC friction pile, the picking position can also be adjusted for quick picking. During the pile driving process, it can also play a correction role.

[0063] refer to Figure 6 , Figure 7A rack 701 is fixedly connected to the outer side of the column 7, and a connecting clip 5 is sleeved on the bottom of the column 7. The lifting adjustment mechanism 6 includes a lifting box 601. A second motor 603 is fixedly connected to one side of the outer wall of the lifting box 601. A worm gear 604 is fixedly connected to the output end of the second motor 603. A worm wheel 605 is meshed with the outer side of the worm gear 604. A rotating rod is fixedly connected to the middle of the worm wheel 605. One end of the rotating rod is rotatably connected to the inner wall of the lifting box 601. A second gear 606 is fixedly connected to the outer wall of the rotating rod. A third gear 607 is meshed with the outer side of the second gear 606. The middle of the third gear 607 is rotatably connected to the inner wall of the lifting box 601 through another rotating rod. Sliding holes 602 are opened on both sides of the outer wall of the lifting box 601. The outer side of the column 7 passes through the sliding holes 602. The outer side of the third gear 607 is meshed with one side of the rack 701. A clamping and correction mechanism 8 is fixedly connected to the outer wall of the lifting box 601 and one side of the connecting clip 5.

[0064] The second motor 603 can drive the worm gear 604 to rotate, which in turn drives the worm wheel 605 to rotate. Under the drive of the rotating rod, the second gear 606 rotates, which in turn drives the third gear 607 to rotate. The third gear 607 meshes with the rack 701 for transmission. The rack 701 is fixed on the outside of the column 7. Therefore, the power of the second motor 603 can make the lifting box 601 move up and down on the outside of the column 7. This can drive the clamping and correction mechanism 8 on the outer wall of the lifting box 601 to move up and down. When picking up PHC friction piles, it can adapt to clamping PHC friction piles of different lengths. It can also control the clamping and correction mechanism 8 to clamp at different positions on the PHC friction pile. During the pile driving process, as the PHC friction pile sinks, the clamping and correction mechanism 8 can move down at the same time to improve the guiding effect and reduce the occurrence of deviation.

[0065] refer to Figures 8-10The clamping and correction mechanism 8 includes a clamping mounting box 801. A third hydraulic cylinder 802 is fixedly connected to one side of the clamping mounting box 801. The output end of the third hydraulic cylinder 802 passes through the clamping mounting box 801 and extends to be fixedly connected to a main clamping shaft 803. A frustum 804 is fixedly connected to the outer side of the main clamping shaft 803. Two mounting shafts 806 are fixedly connected to the other side of the clamping mounting box 801. Clamping arms 805 are rotatably connected to the outer sides of both mounting shafts 806. A roller is rotatably connected to one end of each clamping arm 805, and the outer side of the roller is in close contact with the outer wall of the frustum 804. The other ends of the two clamping arms 805 and a main clamping shaft 804 are also connected. One end of each of the three roller seats 807 is fixedly connected to a roller seat 807. The rollers are rotatably connected to the middle of each of the three roller seats 807. The three rollers can clamp the PHC friction pile. The three contact points between the three rollers and the three PHC friction piles can be connected to form an arc. This arc is a superior arc larger than a semicircle, which can prevent the PHC friction piles from falling off. The outer side of the main clamping shaft 803 is slidably connected to the inner wall of the clamping and mounting box 801. The inner sides of the clamping and mounting box 801 are fixedly connected to limit sleeves 808. The inner side of the limit sleeves 808 is slidably connected to the outer side of the main clamping shaft 803. A through hole is opened on the outer wall of the clamping and mounting box 801 at the mounting shaft 806.

[0066] refer to Figure 10 The third hydraulic cylinder 802 can push the main clamping shaft 803. Since the two inclined surfaces of the main clamping shaft 803 are connected to the clamping arms 805 by rollers, it can further drive one end of the two clamping arms 805 away from each other and the other end close to each other, so that the three rollers can be pressed together and clamp the PHC friction pile.

[0067] Pressure sensors 9 are provided at one end of the clamping arm 805 and one end of the main clamping shaft 803. The pressure sensors 9 are used to detect the pressure on the clamping arm 805 and the main clamping shaft 803, maintain the thrust of the third hydraulic cylinder 802, and move the clamping correction mechanism 8 up and down. If the pressure at different positions of the PHC friction pile is basically equal, it means that there is no tilt. It can quickly check whether the pile is tilted and correct it in time.

[0068] Working Principle: During pile driving, the position of the clamping and correction mechanism 8 is first adjusted using the flipping adjustment mechanism 2, and the clamping direction of the clamping and correction mechanism 8 is further adjusted using the rotation adjustment mechanism 4. The PHC friction pile is then picked up. The flipping adjustment mechanism 2 and the transport mechanism 3 are used to vertically position the clamping and correction mechanism 8. The rotation adjustment mechanism 4 can horizontally adjust the pile driving position of the clamping and correction mechanism 8. After adjusting the angle and position, the static pressure pile driving equipment is used to drive the PHC friction pile. The two clamping and correction mechanisms 8 act as guides. The pressure sensor 9 detects the pressure on the clamping arm 805 and the main clamping shaft 803, maintaining the thrust of the third hydraulic cylinder 802. The clamping and correction mechanism 8 is moved up and down to obtain the pressure detection results at different positions of the PHC friction pile. If the detection structure determines that the PHC friction pile is tilted in a certain direction, it can be... The first hydraulic cylinder 201 drives the flipping mounting frame 202 to rotate around the flipping support 203 for correction. The first motor 402 can also drive the first gear 403 to rotate, which in turn drives the gear ring 404 to rotate, which in turn drives the support frame 405 to rotate, causing the column 7 to rotate for correction. The second motor 603 can drive the worm gear 604 to rotate, which drives the worm wheel 605 to rotate, which drives the second gear 606 to rotate, which in turn drives the third gear 607 to rotate, causing the lifting box 601 to rise and fall outside the column 7. This causes the clamping correction mechanism 8 on the outer wall of the lifting box 601 to rise and fall, keeping the thrust of the third hydraulic cylinder 802 constant. Moving the clamping correction mechanism 8 up and down can correct the PHC friction pile. If the pressure at different positions of the PHC friction pile is basically equal, it means there is no tilt, and the pile driving operation can continue.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pile driving device, characterized in that: The device includes a flipping adjustment mechanism (2), a transport mechanism (3), and a rotation adjustment mechanism (4). The transport mechanism (3) is used to carry and transport the flipping adjustment mechanism (2) and the rotation adjustment mechanism (4). One side of the flipping adjustment mechanism (2) is connected to the top of the transport mechanism (3). The flipping adjustment mechanism (2) can flip around the top side of the transport mechanism (3) to adjust the angle of the rotation adjustment mechanism (4). A column (7) is fixedly connected to the top of the rotation adjustment mechanism (4). The rotation adjustment mechanism (4) is used to adjust the horizontal rotation angle of the column (7). A lifting adjustment mechanism (6) is installed on the outside of the column (7). A clamping correction mechanism (8) is installed on the bottom of the column (7) and one side of the lifting adjustment mechanism (6). The clamping correction mechanism (8) is used to clamp the PHC friction pile and can correct the PHC friction pile. It is also used to sense the pressure generated by the PHC friction pile in different directions. The clamping and correction mechanism (8) includes a clamping mounting box (801). A third hydraulic cylinder (802) is fixedly connected to one side of the clamping mounting box (801). The output end of the third hydraulic cylinder (802) passes through the clamping mounting box (801) and extends to be fixedly connected to a main clamping shaft (803). A frustum (804) is fixedly connected to the outer side of the main clamping shaft (803). Two mounting shafts (806) are fixedly connected to the other side of the clamping mounting box (801). A clamping arm (805) is rotatably connected to the outer side of each of the two mounting shafts (806). A roller is rotatably connected to one end of each clamping arm (805). The outer side of the roller is in close contact with the outer wall of the truncated cone (804). The other end of the clamping arm (805) and one end of the main clamping shaft (803) are both fixedly connected to the roller seat (807). The roller seat (807) is rotatably connected to the middle. The outer side of the main clamping shaft (803) is slidably connected to the inner wall of the clamping mounting box (801). The inner sides of the clamping mounting box (801) are fixedly connected to the limiting sleeve (808). The inner side of the limiting sleeve (808) is slidably connected to the outer side of the main clamping shaft (803). The outer wall of the clamping mounting box (801) and the mounting shaft (806) are provided with a through hole.

2. The pile driving device according to claim 1, characterized in that: The transport mechanism (3) includes a frame (301) and a second hydraulic cylinder (302). The second hydraulic cylinder (302) is fixedly connected to the four corners of the bottom of the frame (301). A hook seat (304) is fixedly connected to one side of the frame (301). The tilting adjustment mechanism (2) is installed on the other side of the frame (301). A wheel (303) is provided at the bottom of the frame (301).

3. A pile driving device according to claim 2, characterized in that: The tilting adjustment mechanism (2) includes a first hydraulic cylinder (201) and a tilting mounting bracket (202). One end of the first hydraulic cylinder (201) is rotatably connected to the side of the frame (301) near the coupler seat (304). The output end of the first hydraulic cylinder (201) is rotatably connected to one side of the tilting mounting bracket (202). A tilting support seat (203) is rotatably connected to the middle of the tilting mounting bracket (202). The tilting support seat (203) is fixed in an inclined position on the side of the frame (301) away from the coupler seat (304). A tilting mounting bracket (204) is fixedly connected to the other side of the tilting mounting bracket (202). A rotation adjustment mechanism (4) is installed on the outer side of the tilting mounting bracket (204) and the other side of the tilting mounting bracket (202).

4. A pile driving device according to claim 3, characterized in that: The rotation adjustment mechanism (4) includes a first motor (402) and a gear ring (404). The first motor (402) is fixedly connected to a bracket (401). The bottom of the bracket (401) is fixedly connected to the other side of the flip mounting bracket (202). The output end of the first motor (402) is fixedly connected to a first gear (403). The outer side of the first gear (403) is meshed with a gear ring (404). The inside of the gear ring (404) is connected to the outer wall of the flip mounting bracket (204) through a slewing bearing. The top of the gear ring (404) is fixedly connected to a support frame (405). The top of the support frame (405) is fixedly connected to the column (7).

5. A pile driving device according to claim 1, characterized in that: A rack (701) is fixedly connected to the outer side of the column (7), and a connecting clip (5) is sleeved on the bottom of the column (7). The lifting adjustment mechanism (6) includes a lifting box (601). A second motor (603) is fixedly connected to one side of the outer wall of the lifting box (601). A worm gear (604) is fixedly connected to the output end of the second motor (603). A worm wheel (605) is meshed with the outer side of the worm gear (604). A rotating rod is fixedly connected to the middle of the worm wheel (605). One end of the rotating rod is rotatably connected to the inner wall of the lifting box (601), and the outer wall of the rotating rod is fixedly connected to the inner wall of the lifting box (601). A second gear (606) is fixedly connected to the outer side of the second gear (606), and a third gear (607) is meshed with the outer side of the second gear (606). The middle part of the third gear (607) is rotatably connected to the inner wall of the lifting box (601) through another rotating rod. Sliding holes (602) are provided on both sides of the outer wall of the lifting box (601). The outer side of the column (7) passes through the sliding holes (602). The outer side of the third gear (607) is meshed with one side of the rack (701). The clamping and correction mechanism (8) is fixedly connected to both the outer wall of the lifting box (601) and one side of the connecting clamp (5).

6. A pile driving device according to claim 1, characterized in that: Pressure sensors (9) are provided at one end of the clamping arm (805) and at one end of the main clamping shaft (803).

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