Self-adaptive variable-diameter adjusting device for pile sinking deviation and control method

Abstract

The invention discloses a self-adaptive variable-diameter adjusting device for pile sinking deviation and a control method.The device comprises a driving variable-diameter column, an ejection rod and a deviation adjusting assembly, the ejection rod and the deviation adjusting assembly are installed on the driving variable-diameter column, the driving variable-diameter column comprises a main through hole formed in the axial direction of the driving variable-diameter column, and the ejection rod is arranged in the axial direction of the driving variable-diameter column; one end of the ejection rod is located outside one axial end of the driving variable-diameter column body, the other end of the ejection rod is connected with the deviation adjusting assembly, the deviation adjusting assembly is arranged in the radial direction of the driving variable-diameter column body, and the two ends of the deviation adjusting assembly are located on the inner side and the outer side of the driving variable-diameter column body respectively. When the deviation adjusting assembly is subjected to lateral acting force generated by deviation of the pipe pile stretching into the main through hole, counter-acting force is provided for the pipe pile so as to adjust deviation of the pipe pile. According to the self-adaptive pipe pile sinking device, self-adaptive adjustment can be conducted on pile sinking deviation, the pipe pile is reset and restored to the vertical state, hammering eccentricity is avoided, and recycling is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of pile driving construction devices, in particular to an adaptive variable diameter adjustment device for pile driving deviation and a control method. Background Art

[0002] During the construction of pile sinking, the piles may be deviated due to the influence of external environment, such as complex marine environment, complex geology or severe wind and waves. The so-called deviation means that the piles are not kept strictly vertical, but tilted, the inclination exceeds the specification requirements, and the plane position exceeds the allowable value of the design requirements. When the piles are deviated, the traditional solution is to rely on the experience of the on-site construction personnel, according to the measured value of the displacement of the piles, and then according to human judgment and by controlling the anchor cable of the pile ship to adjust the deviation and restore the piles to vertical. Such a solution relies on the experience of the construction workers. If the experience is insufficient, the deviation adjustment cannot be well implemented. Even if the deviation occurs, it is judged as no deviation and no adjustment is made. Even if it is handled, it cannot be adjusted in real time after the deviation occurs. As a result, the problem of multiple deviations not being adjusted in a timely and effective manner occurs. In this case, the deviation of the pipe piles will gradually accumulate, and eventually the deviation of the pipe piles will exceed the allowable deviation value in the specification, which will seriously affect the construction of the pile cap on the pipe pile and the beam and slab structure above the pipe pile, and even bury a hidden danger to the safety of the project.

[0003] In addition, the construction of offshore PHC pipe piles generally adopts the heavy hammer and light strike method, and the pile top needs to be placed on the pile pad to avoid the pile hammer directly hitting the pile top and causing the pile top to break or deform. When the purchased heavy pile hammer is used, the hammer cap of the pile hammer is often too large as a replacement device. For this reason, a longitudinal wedge is generally installed at the bottom of the hammer cap to reduce the distance from the pipe pile body to avoid large hammer eccentricity caused by an oversized hammer cap. However, the severe wind and wave conditions at sea still make it difficult to avoid excessive deviation and control of the pipe pile during pile sinking, and it is easy to cause the pile pad to break and increase the loss. At the same time, the deviation of the pile often leads to the mutual squeezing of the pile body and the longitudinal wedge installed at the bottom of the hammer cap. Coupled with the hammer force, it leads to cracking and damage during continuous hammering, which needs to be constantly repaired or even replaced, affecting the efficiency of pile sinking and increasing the risk of pile sinking construction.

[0004] In summary, the existing solutions to the problem of pile displacement during pipe pile driving still have their own shortcomings and are unable to properly adjust and restore the displacement of the pipe piles. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide an adaptive variable diameter adjustment device and a control method for pile driving deviation, which can solve the problems described in the background technology.

[0006] The technical scheme for achieving the purpose of the present invention is: an adaptive variable diameter adjustment device for pile driving deviation, comprising a replacement variable diameter column, and a ejection rod and a deviation adjustment component installed on the replacement variable diameter column.

[0007] The replacement diameter-changing cylinder includes a main through hole arranged along its own axial direction, the ejection rod is arranged along the axial direction of the replacement diameter-changing cylinder, the ejection rod is connected to the offset adjustment component, one end of the ejection rod is located outside one axial end of the replacement diameter-changing cylinder, and the other end is connected to the offset adjustment component.

[0008] A through hole is provided on the substitute-striking variable-diameter cylinder, and the through hole is arranged along the radial direction of the substitute-striking variable-diameter cylinder. The offset adjustment component is installed through the through hole, so that the offset adjustment component is arranged along the radial direction of the substitute-striking variable-diameter cylinder, and the two ends of the offset adjustment component are respectively located on the inner side and the outer side of the substitute-striking variable-diameter cylinder, so that one end of the offset adjustment component is located in the main through hole, and the other end is located on the outer side of the substitute-striking variable-diameter cylinder away from the main through hole.

[0009] When the offset adjustment component is subjected to a lateral extrusion force caused by the deviation of the pipe pile extending into the main through hole, the offset adjustment component provides a reaction force to the pipe pile after being subjected to the force, so as to adjust the offset of the pipe pile.

[0010] Furthermore, when the offset adjustment group is subjected to a first force from the pipe pile, the end of the offset adjustment component close to the pipe pile is subjected to the first force and then is squeezed and deformed, and then directly provides a reaction force to the pipe pile to adjust the offset of the pipe pile.

[0011] When the offset adjustment component continues to be subjected to the force of the pipe pile on the basis of the first force and reaches the second force, the second force is greater than the first force, and the end of the offset adjustment component close to the pipe pile first generates extrusion deformation and pushes the end of the offset adjustment component away from the pipe pile away from the main through hole, and the end of the offset adjustment component away from the pipe pile receives the reaction force of the hammer cap externally mounted on the replacement diameter reducing column, and the offset adjustment component finally acts on the pipe pile after receiving the reaction force from the hammer cap, thereby adjusting the offset of the pipe pile.

[0012] Furthermore, the ejection rod includes a rod cap and a rod body, the rod cap is fixedly connected to one end of the rod body, the diameter of the rod cap is larger than the diameter of the rod body, the end of the rod body away from the rod cap is connected to the offset adjustment component, and the rod cap is located outside one axial end of the substitute diameter reducing cylinder.

[0013] Furthermore, the adaptive variable diameter adjustment device also includes a plurality of annular ribs, each of which is sleeved along the circumference of the substitute diameter variable cylinder and fixed on the outer wall of the substitute diameter variable cylinder, and each annular rib is arranged in parallel and spaced apart along the axial direction of the substitute diameter variable cylinder.

[0014] Furthermore, the adaptive variable diameter adjustment device also includes a plurality of longitudinal support plates, each of which is mounted around the outer wall of the replacement variable diameter column, each of which is arranged in parallel and spaced apart, and the longitudinal support plates are arranged vertically and crosswise with the annular ribs.

[0015] The offset adjustment component is located on the longitudinal support plate portion between two adjacent annular ribs.

[0016] Furthermore, a guide hole is provided in the longitudinal support plate, and the rod body of the ejection rod extends into the guide hole and can slide freely along the guide hole, and the diameter of the rod cap is greater than the diameter of the guide hole and the diameter of the rod body.

[0017] Furthermore, when the ejection rod slides in the guide hole along the first direction, the ejection rod can drive the two ends of the offset adjustment assembly to approach each other.

[0018] When the ejection rod slides in the guide hole along the second reverse direction, the ejection rod can drive the two ends of the offset adjustment component to move away from each other.

[0019] The first direction and the second direction are two opposite directions.

[0020] Furthermore, the offset adjustment component includes an elastic component, a first offset component and a second offset component, the elastic component passes through the substituting diameter-changing cylinder along the radial direction of the substituting diameter-changing cylinder, the first offset component and the second offset component are connected together through the elastic component, the two ends of the elastic component are respectively connected to the first offset component and the second offset component, one end of the first offset component away from the second offset component is located in the main through hole, and one end of the second offset component away from the first offset component is located outside the substituting diameter-changing cylinder,

[0021] The first biasing component includes an outer directional ball head, a first spring and a first connecting end. The two ends of the first spring are respectively connected to the outer directional ball head and the first connecting end. The first spring is between the outer directional ball head and the first connecting end. One end of the elastic component is connected to the first connecting end. The end of the first connecting end connected to the elastic component passes through the through hole on the longitudinal support plate and is embedded in the through hole of the replacement diameter reducing column and can slide in the through hole.

[0022] The second biasing component includes an inner directional ball head, a second spring and a second connecting end, the two ends of the second spring are respectively connected to the inner directional ball head and the second connecting end, the second spring is between the inner directional ball head and the second connecting end, one end of the elastic component is connected to the second connecting end, and the end of the second connecting end connected to the elastic component is embedded in the through hole of the replacement diameter reducing cylinder and can slide in the through hole.

[0023] The rod body of the ejection rod is located between the first connection end and the second connection end, and the elastic component is also connected to the rod body.

[0024] Furthermore, a groove is provided on one end of the first connection end and the second connection end close to the rod body, and the rod body passes through the groove.

[0025] The elastic component includes a stretching deformation piece and a socket pin shaft, and the two ends of the stretching deformation piece are respectively fixedly connected to a socket pin shaft, the rod body is connected to the stretching deformation piece, and the socket pin shafts on the two ends of the stretching deformation piece are respectively snap-fitted and installed in the grooves of the first connecting end and the second connecting end, so that the two ends of the stretching deformation piece are respectively connected to the first connecting end and the second connecting end.

[0026] An adaptive variable diameter adjustment control method for pile driving deviation is applied to the adaptive variable diameter adjustment device for pile driving deviation, and the method comprises the following steps:

[0027] Step 1: Install the replacing diameter-changing column of the adaptive diameter-changing adjustment device on the pile pad at the top of the pipe pile, so that the pipe pile extends into the main through hole of the replacing diameter-changing column;

[0028] Step 2: lower the pile hammer so that the hammer cap is pressed downward onto the replacement diameter reducing column. During the pressing process of the hammer cap, the hammer cap squeezes the ejection rod, so that the ejection rod gradually moves downward. The ejection rod drives the two ends of the offset adjustment assembly to approach each other, so that the hammer cap is gradually inserted into the replacement diameter reducing column and lowered into place;

[0029] Step 3: Sink the pile. During the sinking process, the hammer core of the pile hammer hits the hammer cap.

[0030] When the pile body of the pipe pile is tilted to one side and the tilt of the pipe pile is small, the pipe pile generates a first force on one end of the offset adjustment component. The end of the offset adjustment component close to the pipe pile directly rebounds after receiving the first force, so as to deflect the pipe pile away from the tilted side, so that the pipe pile is reset and remains vertical.

[0031] When the pile body of the pipe pile continues to tilt to one side, making the tilting displacement larger, the displacement adjustment component is subjected to a second force acting on the pipe pile. Under the second force, the displacement adjustment component moves outward along the radial direction of the replacement diameter-changing cylinder. After the displacement adjustment component is subjected to a reaction force from the hammer cap, the outer displacement adjustment component again produces a tendency to deflect the pipe pile away from the tilting direction under the reaction force, so that the pipe pile is reset.

[0032] Step 4: After the pile sinking is completed, lift the hammer cap until the ejection rod is not affected by the force of the hammer cap and is in a stress-free state, and the offset adjustment component returns to its initial position. The two ends of the offset adjustment component are not in contact with the pipe pile and the hammer cap respectively, or are in point contact with the pipe pile and the hammer cap, so that the two ends of the offset adjustment component are in contact with the pipe pile and the hammer cap and are in a stress-free state, so as to remove the hammer cap from the replacement diameter-changing column, and remove the replacement diameter-changing column from the pipe pile, and complete the recovery.

[0033] Beneficial effects of the present invention: The present invention can adaptively adjust the pile displacement in different directions and at different levels, reset the pile, restore it to a vertical state, avoid hammer eccentricity, and can still achieve displacement adjustment according to different levels of displacement. When a hammering causes the pile to be slightly displaced, adaptive displacement adjustment can also be used, thereby effectively reducing or eliminating the problem of small displacements caused by continuous hammering and accumulating into large displacements. When a hammering causes the pile to be significantly displaced, adaptive displacement adjustment can also be used to return the pile to the correct position. And by arranging a plurality of displacement adjustment components around the circumference of the replacement diameter-changing cylinder, multi-directional pile displacement adjustment can be achieved.

[0034] In addition, the offset adjustment component cooperates with the ejection rod to facilitate the insertion of the pipe pile into the main through hole of the replacement variable diameter column and the placement of the hammer cap on the outside of the replacement variable diameter column, and also facilitates the recovery of the replacement variable diameter column and the hammer cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the application of the present invention to the pile sinking process under the hammer cap, pile pad and pipe pile;

[0036] Figure 2 for Figure 1 The hammer cap is set on the application schematic diagram of the present invention;

[0037] Figure 3 It is a structural schematic diagram of the present invention;

[0038] Figure 4 A schematic diagram of the connection between the ejection rod and the offset adjustment assembly and their respective structures;

[0039] Figure 5 It is a structural schematic diagram of the offset adjustment component;

[0040] Figure 6 It is a schematic diagram of the movement change of the offset component caused by the ejection rod being subjected to the force;

[0041] Figure 7 It is a three-dimensional structural schematic diagram of the shooting rod and the offset adjustment component;

[0042] Figure 8 It is a three-dimensional structural schematic diagram of the shooting rod and the offset adjustment assembly from another visual angle;

[0043] Fig. 9 A schematic diagram of the connection between the elastic component and the first connection end or the second connection end;

[0044] Fig.10 is a schematic diagram of the structure of the elastic component;

[0045] Fig.11 is a flow chart of the method;

[0046] In the figure, 1-replacement diameter-changing device, 11-replacement diameter-changing column, 12-ejection rod, 121-rod cap, 122-rod body, 13-bias adjustment component, 131-external directional ball head, 132-first spring, 133-first connecting end, 134-second connecting end, 135-second spring, 136-inner directional ball head, 137-elastic component, 138-socket pin shaft, 139-tensile deformation member, 14-longitudinal support plate, 15-annular rib, 2-pile pad, 3-pipe pile, 4-hammer cap. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0048] like Figure 1-Figure 10 As shown, this embodiment provides an adaptive variable diameter adjustment device for pile driving deviation, including a substitute variable diameter device 1, the substitute variable diameter device 1 includes a substitute variable diameter cylinder 11, and a ejection rod 12 and a deviation adjustment component 13 installed on the substitute variable diameter cylinder 11. The substitute variable diameter cylinder 11 includes a main through hole arranged along its own axial direction, that is, the main through hole penetrates the substitute variable diameter cylinder 11 along the axial direction of the substitute variable diameter cylinder 11, and the main through hole is in a long strip shape. The main through hole is used to sleeve the adaptive variable diameter adjustment device on the pipe pile 3 that needs to be piled, that is, when the pipe pile 3 is in the process of pile driving, the substitute variable diameter cylinder 11 is sleeved on the pipe pile 3 through the main through hole, and the pipe pile 3 extends into the main through hole. The substitute variable diameter cylinder 11 is used to support and install the hammer cap 4, and the hammer cap 4 is sleeved on the substitute variable diameter cylinder 11, that is, the hammer cap 4 is sleeved on the outside of the substitute variable diameter cylinder 11.

[0049] The ejection rod 12 is arranged along the axial direction of the substitute-hitting variable diameter cylinder 11, and the ejection rod 12 is connected to the offset adjustment assembly 13. One end of the ejection rod 12 is located outside the axial end of the substitute-hitting variable diameter cylinder 11, and the other end is connected to the offset adjustment assembly 13. The ejection rod 12 includes a rod cap 121 and a rod body 122. The rod cap 121 is fixedly connected to one end of the rod body 122, and the rod cap 121 and the rod body 122 can be an integral structure. The diameter of the rod cap 121 is larger than the diameter of the rod body 122, that is, the minimum radial width of the rod cap 121 is larger than the maximum radial width of the rod body 122. One end of the rod body 122 away from the rod cap 121 is connected to the offset adjustment assembly 13, and the rod cap 121 is located outside the axial end of the substitute-hitting variable diameter cylinder 11. A through hole is provided on the substitute-beating variable-diameter cylinder 11, and the through hole is arranged along the radial direction of the substitute-beating variable-diameter cylinder 11. The offset adjustment component 13 is installed through the through hole, so that the offset adjustment component 13 is arranged along the radial direction of the substitute-beating variable-diameter cylinder 11, and the two ends of the offset adjustment component 13 are respectively located on the inner side and the outer side of the substitute-beating variable-diameter cylinder 11, so that one end of the offset adjustment component 13 is located in the main through hole, and the other end is located on the outer side of the substitute-beating variable-diameter cylinder 11 away from the main through hole.

[0050] When the offset adjustment component 13 is subjected to the force of the external object, the offset adjustment component 13 is deformed and generates a reaction force to act on the external object to adjust the offset of the pile. When the external object is a pipe pile 3, the pipe pile 3 forms a force on the offset adjustment component 13 due to the offset, and the force can directly or indirectly act on the pipe pile 3, and finally adjust the offset of the pipe pile 3 to restore it to vertical.

[0051] More specifically, when an external object generates a first force on the offset adjustment component 13, since the first force is relatively small, only the end of the external object in contact with the offset adjustment component 13 is deformed, and due to the deformation, the offset adjustment component 13 directly generates a reaction force on the external object, and the offset adjustment component 13 does not move under the first force but keeps its position fixed. Therefore, when the external object is a pipe pile 3, the pipe pile 3 is tilted due to the offset, and the tilted pipe pile 3 will squeeze the end of the offset adjustment component 13 extending into the main through hole, and the end of the offset adjustment component 13 close to the pipe pile 3 generates a reaction force due to the squeezing, and the reaction force directly acts on the pipe pile 3 and generates a movement trend in the opposite direction of the tilt direction, thereby adjusting the offset of the pipe pile 3, and finally restoring the pipe pile 3 to a vertical state.

[0052] When an external object generates a second force on the offset adjustment component 13, the second force is greater than the first force, and the second force is larger, so that the second force is sufficient to drive the offset adjustment component 13 as a whole to move along the radial direction of the replacement variable diameter column 11 from the inside to the outside or from the outside to the inside, so that the two ends of the offset adjustment component 13 are close to or away from each other, and the offset adjustment component 13 finally acts on the pipe pile 3 in the main through hole, thereby adjusting the offset of the pipe pile 3.

[0053] Exemplarily, the adaptive variable diameter adjustment device also includes a plurality of annular ribs 15, each of which is circumferentially sleeved on the replacing diameter reducing cylinder 11 and fixed on the outer wall of the replacing diameter reducing cylinder 11, and each of the annular ribs 15 is spaced apart and parallel to the axial direction of the replacing diameter reducing cylinder 11.

[0054] Exemplarily, the adaptive variable diameter adjustment device further comprises a plurality of longitudinal support plates 14, each of which is mounted around the outer wall of the variable diameter cylinder 11, and each of which is arranged in parallel and spaced apart. The longitudinal support plates 14 are arranged perpendicularly and crosswise with the annular ribs 15.

[0055] The longitudinal support plate 14 is provided with a guide hole, and the rod body 122 of the ejection rod 12 extends into the guide hole and can slide freely along the guide hole. The diameter of the rod cap 121 is greater than the diameter of the guide hole and greater than the diameter of the rod body 122, so that the rod cap 121 cannot extend into the guide hole, preventing the entire ejection rod 12 from falling into the guide hole, so that the rod cap 121 is always outside the longitudinal support plate 14.

[0056] When the ejection rod 12 slides in the guide hole along the first direction, the ejection rod 12 can drive the two ends of the offset adjustment component 13 to approach each other, so that both ends of the offset adjustment component 13 are close to the direction of the replacement variable diameter cylinder 11, so that the pipe pile 3 can be inserted into the main through hole, and the hammer cap 4 can be inserted on the outside of the replacement variable diameter cylinder 11. When the ejection rod 12 slides in the guide hole along the second reverse direction, the ejection rod 12 can drive the two ends of the offset adjustment component 13 to move away from each other, so that both ends of the offset adjustment component 13 move away from the replacement variable diameter cylinder 11, so that the two ends of the offset adjustment component 13 return to the initial position. Thereby, after the pipe pile 3 is inserted into the main through hole and the hammer cap 4 is sleeved on the replacement diameter-changing column 11, the offset adjustment component 13 can be subjected to the force of the pipe pile 3 and / or the hammer cap 4 after the pipe pile 3 and / or the hammer cap 4 are slightly offset and tilted, thereby adjusting the offset of the pipe pile 3 through the offset adjustment component 13.

[0057] The first direction and the second direction are two opposite directions. For example, the first direction is axially downward along the guide hole, and the second direction is axially upward along the guide hole.

[0058] Exemplarily, the offset adjustment assembly 13 is installed on the longitudinal support plate 14 and is located on the portion of the longitudinal support plate 14 between two adjacent annular ribs 15 .

[0059] The annular ribs 15 and the longitudinal support plates 14 both play a role in reinforcing and supporting the variable diameter column 11 .

[0060] Exemplarily, the offset adjustment component 13 includes an elastic component 137, a first offset component and a second offset component. The elastic component 137 passes through the replacing variable diameter column 11 along the radial direction of the replacing variable diameter column 11. The first offset component and the second offset component are connected together through the elastic component 137. The two ends of the elastic component 137 are respectively connected to the first offset component and the second offset component. The end of the first offset component away from the second offset component is located in the main through hole, and the end of the second offset component away from the first offset component is located on the outside of the replacing variable diameter column 11. The deformable characteristics of the elastic component 137 enable the first offset component and the second offset component to be able to approach and move away from each other.

[0061] The first biasing assembly includes an outer directional ball head 131, a first spring 132 and a first connecting end 133, the two ends of the first spring 132 are respectively connected to the outer directional ball head 131 and the first connecting end 133, and the first spring 132 is between the outer directional ball head 131 and the first connecting end 133. One end of the elastic assembly 137 is connected to the first connecting end 133, so that the elastic assembly 137 is connected to the first biasing assembly. The first connecting end 133 is inserted into the through hole of the longitudinal support plate 14 and then embedded in the through hole of the replacement diameter-changing cylinder 11, and can slide in the through hole, so that the first connecting end 133 moves along the through hole to the inner side (i.e., toward the direction close to the main through hole) or the outer side (i.e., away from the main through hole) of the replacement diameter-changing cylinder 11.

[0062] The second biasing assembly includes an inner directional ball head 136, a second spring 135 and a second connecting end 134, the two ends of the second spring 135 are respectively connected to the inner directional ball head 136 and the second connecting end 134, and the second spring 135 is between the inner directional ball head 136 and the second connecting end 134. One end of the elastic assembly 137 is connected to the second connecting end 134, so that the elastic assembly 137 is connected to the second biasing assembly. The end of the second connecting end 134 connected to the elastic assembly 137 is embedded and installed on the through hole of the replacement diameter-changing cylinder 11, and can slide in the through hole, so that the second connecting end 134 moves along the through hole to the inside (i.e., toward the direction close to the main through hole) or the outside (i.e., away from the main through hole) of the replacement diameter-changing cylinder 11.

[0063] The rod body 122 of the ejection rod 12 is located between the first connection end 133 and the second connection end 134, and the elastic component 137 is also connected to the rod body 122, so that when the ejection rod 12 moves along the first direction, the ejection rod 12 drives the elastic component 137 to deform and stretch downward, and the first biasing component and the second biasing component are pulled closer to each other by the elastic component 137. On the contrary, when the ejection rod 12 moves along the second direction, the ejection rod 12 drives the elastic component 137 to deform upward, and first returns to the natural state and then deforms and stretches upward, and the first biasing component and the second biasing component are pulled away from each other by the elastic component 137, and gradually return to the initial position (that is, the position of the first biasing component and the second biasing component when the elastic component 137 is in the natural state), and then start to approach each other again from the initial position.

[0064] refer to Figure 6 , Figure 6 The arrows in the diagram indicate the direction of force or movement. Figure 6From left to right, the ejection rod 12 moves downward along the first direction, and the elastic component 137 pulls the first biasing component and the second biasing component to approach each other in the horizontal direction, and finally makes the first connection end 133 and the second connection end 134 fit together. Then, the ejection rod 12 moves upward along the second direction, and under the combined action of the rebound force of the elastic component 137 and the pulling force of the ejection rod 12 moving upward, the first biasing component and the second biasing component first move away from each other, and then move closer, so that the first connection end 133 and the second connection end 134 fit together again.

[0065] Exemplarily, a groove is provided on one end of the first connection end 133 and the second connection end 134 close to the shaft 122, and the shaft 122 passes through the groove, so that when the first connection end 133 and the second connection end 134 are attached to each other, the ejection rod 12 can also slide along the first direction or the second direction.

[0066] Exemplarily, the elastic component 137 includes a tensile deformation member 139 and a socket pin 138, and the two ends of the tensile deformation member 139 are respectively fixedly connected to a socket pin 138. The rod body 122 is connected to the tensile deformation member 139, and the socket pins 138 on the two ends of the tensile deformation member 139 are respectively engaged and installed in the grooves of the first connection end 133 and the second connection end 134, so that the two ends of the tensile deformation member 139 are respectively connected to the first connection end 133 and the second connection end 134.

[0067] Exemplarily, the stretching deformation member 139 is a rubber band, which can be a high elastic rubber band used in industry. The rubber band is connected to the socket pin shaft 138 through a rubber sleeve sleeved on the socket pin shaft 138 .

[0068] refer to Fig.11 Based on the self-adaptive variable diameter adjustment device for pile driving deviation, this example also provides a self-adaptive variable diameter adjustment control method for pile driving deviation, which method includes the following steps:

[0069] Step 1: Install the replacing diameter-changing column 11 of the adaptive diameter-changing adjustment device on the pile pad 2 at the top of the pipe pile 3 so that the pipe pile 3 extends into the main through hole of the replacing diameter-changing column 11 .

[0070] Step 2: lower the pile hammer so that the hammer cap 4 is pressed downward onto the replacement diameter-changing column 11. During the pressing process of the hammer cap 4, the hammer cap 4 squeezes the rod cap 121 of the ejection rod 12, so that the ejection rod 12 gradually moves downward. The ejection rod 12 drives the elastic component 137 to move downward, and the elastic component 137 simultaneously pulls the two ends of the offset adjustment component closer to each other, that is, pulls the inner directional ball head 136 and the outer directional ball head 131 to gradually retract, so that the hammer cap 4 is gradually inserted into the replacement diameter-changing column 11 and lowered into place.

[0071] Step 3: sinking the pipe pile 3. During the sinking process, the hammer core of the pile hammer hits the hammer cap 4.

[0072] When the pile body of the pipe pile 3 is tilted to one side, for example, Figure 1 In the example of the right tilt, when the pipe pile 3 is tilted and deflected slightly, the force exerted by the pipe pile 3 on one end of the deflection adjustment component 13 is relatively small, that is, the second spring 135 connected to the inner directional ball head 136 on the second deflection component is pressed downward, and the second spring 135 rebounds after being stressed, deflecting the pipe pile 3 to the left, so that the pipe pile 3 is reset and remains vertical. In this process, the force exerted by the pipe pile 3 on the second spring 135 is relatively small, which is not enough to completely squeeze the second spring 135 to the extreme compression position, which can significantly reduce the problem of excessive deflection that gradually accumulates due to the inability to control a small deflection during the pile sinking process.

[0073] When the pile body of the pipe pile 3 continues to tilt to one side, so that the tilt deviation is larger, the deviation adjustment component 13 is subjected to the force of the pipe pile 3, and the deviation adjustment component 13 moves outward along the radial direction of the replacement diameter-changing cylinder 11, that is, the outer directional ball head 131 moves outward along the radial direction to squeeze the hammer cap 4. After the outer directional ball head 131 is subjected to the reaction force of the hammer cap 4, the outer directional ball head 131 generates a force on the first spring 132. The first spring 132 passes through the first connecting end 133, the second connecting end 134, and the second spring 135 in sequence and generates a reaction force on the inner directional ball head 136. Under the reaction force, the inner directional ball head 136 again generates a tendency to deviate from the tilt direction of the pipe pile 3, so that the pipe pile 3 is reset. Similarly, since the deviation adjustment component 13 is provided in each direction of the pipe pile 3, the pipe pile 3 swings back and forth and is subjected to the action of the deviation adjustment component 13 in each direction, and finally the pipe pile 3 returns to its original position and maintains a vertical state.

[0074] Step 4: After the pile sinking is completed, the hammer cap 4 is lifted up until the ejection rod 12 is not subjected to the force of the hammer cap 4 and is in a stress-free state. Under the rebound action of the elastic component 137, the offset adjustment component 13 returns to its initial position, and the two ends of the offset adjustment component 13 are not in contact with the pipe pile 3 and the hammer cap 4 respectively, or are in point contact with the pipe pile 3 and the hammer cap 4, so that the two ends of the offset adjustment component 13 are in contact with the pipe pile 3 and the hammer cap 4 and are in a stress-free state, so that the hammer cap 4 can be removed from the replacement variable diameter column 11, and the replacement variable diameter column 11 can be removed from the pipe pile 3, and the recovery is completed.

[0075] The present invention can adaptively adjust the pile displacement in different directions and at different levels, restore the sinking pipe to a vertical state, and can still realize displacement adjustment according to the displacement degree of different levels. When a hammering causes the pile 3 to be slightly displaced, adaptive displacement adjustment can also be performed, thereby effectively reducing or eliminating the problem of small displacements caused by continuous hammering and accumulating into large displacements. When a hammering causes the pile 3 to be greatly displaced, adaptive displacement adjustment can also be performed to return the pile 3 to the right position. And by arranging a plurality of displacement adjustment components 13 in the circumferential direction of the replacement diameter-changing cylinder 11, displacement adjustment of the pile 3 in multiple directions can be realized.

[0076] In addition, the offset adjustment component 13 cooperates with the ejection rod 12 to facilitate the insertion of the pipe pile 3 into the main through hole of the replacement variable diameter column 11, and to sleeve the hammer cap 4 on the outside of the replacement variable diameter column 11, and also to facilitate the recovery of the replacement variable diameter column 11 and the hammer cap 4.

[0077] The embodiment disclosed in this specification is only an example of a unilateral feature of the present invention, and the protection scope of the present invention is not limited to this embodiment, and any other functionally equivalent embodiments fall within the protection scope of the present invention. For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. An adaptive variable diameter adjustment device for pile displacement, characterized in that: It includes a replacement-diameter-changing column, a launching rod and a deflection adjustment component installed on the replacement-diameter-changing column, The replacement diameter-changing cylinder includes a main through hole arranged along its own axial direction, the ejection rod is arranged along the axial direction of the replacement diameter-changing cylinder, the ejection rod is connected to the offset adjustment component, one end of the ejection rod is located outside one axial end of the replacement diameter-changing cylinder, and the other end is connected to the offset adjustment component. A through hole is provided on the substitute-striking variable-diameter cylinder, and the through hole is arranged along the radial direction of the substitute-striking variable-diameter cylinder. The offset adjustment component is installed through the through hole, so that the offset adjustment component is arranged along the radial direction of the substitute-striking variable-diameter cylinder, and the two ends of the offset adjustment component are respectively located on the inner side and the outer side of the substitute-striking variable-diameter cylinder, so that one end of the offset adjustment component is located in the main through hole, and the other end is located on the outer side of the substitute-striking variable-diameter cylinder away from the main through hole. When the offset adjustment component is subjected to a lateral extrusion force caused by the deviation of the pipe pile extending into the main through hole, the offset adjustment component provides a reaction force to the pipe pile after being subjected to the force, so as to adjust the offset of the pipe pile.

2. The self-adaptive variable diameter adjustment device for pile displacement according to claim 1, characterized in that: When the offset adjustment group is subjected to the first force of the pipe pile, the end of the offset adjustment component close to the pipe pile is squeezed and deformed after being subjected to the first force, and directly provides a reaction force to the pipe pile to adjust the offset of the pipe pile. When the offset adjustment component continues to be subjected to the force of the pipe pile on the basis of the first force and reaches the second force, the second force is greater than the first force, and the end of the offset adjustment component close to the pipe pile first generates extrusion deformation and pushes the end of the offset adjustment component away from the pipe pile away from the main through hole, and the end of the offset adjustment component away from the pipe pile receives the reaction force of the hammer cap externally mounted on the replacement diameter reducing column, and the offset adjustment component finally acts on the pipe pile after receiving the reaction force from the hammer cap, thereby adjusting the offset of the pipe pile.

3. The self-adaptive variable diameter adjustment device for pile displacement according to claim 2 is characterized in that: The ejection rod includes a rod cap and a rod body. The rod cap is fixedly connected to one end of the rod body. The diameter of the rod cap is larger than the diameter of the rod body. The end of the rod body away from the rod cap is connected to the offset adjustment component. The rod cap is located outside one axial end of the replacement diameter reducing cylinder.

4. The self-adaptive variable diameter adjustment device for pile displacement according to claim 3 is characterized in that: The adaptive variable diameter adjustment device also includes a plurality of annular ribs, each of which is sleeved along the circumference of the replacement diameter-changing cylinder and fixed on the outer wall of the replacement diameter-changing cylinder, and each of the annular ribs is arranged in parallel and spaced apart along the axial direction of the replacement diameter-changing cylinder.

5. The self-adaptive variable diameter adjustment device for pile displacement according to claim 4 is characterized in that: The adaptive variable diameter adjustment device also includes a plurality of longitudinal support plates, each of which is mounted around the outer wall of the variable diameter column, each of which is arranged in parallel and spaced apart, and the longitudinal support plates are arranged vertically and crosswise with the annular ribs. The offset adjustment component is located on the longitudinal support plate portion between two adjacent annular ribs.

6. The self-adaptive variable diameter adjustment device for pile displacement according to claim 5, characterized in that: A guide hole is arranged in the longitudinal support plate, and the rod body of the ejection rod extends into the guide hole and can slide freely along the guide hole. The diameter of the rod cap is greater than the diameter of the guide hole and greater than the diameter of the rod body.

7. The self-adaptive variable diameter adjustment device for pile displacement according to claim 6, characterized in that: When the ejection rod slides in the guide hole along the first direction, the ejection rod can drive the two ends of the offset adjustment component to approach each other. When the ejection rod slides in the guide hole along the second reverse direction, the ejection rod can drive the two ends of the offset adjustment component to move away from each other. The first direction and the second direction are two opposite directions.

8. The self-adaptive variable diameter adjustment device for pile displacement according to claim 7, characterized in that: The offset adjustment component includes an elastic component, a first offset component and a second offset component. The elastic component passes through the substituting diameter-changing cylinder along the radial direction of the substituting diameter-changing cylinder. The first offset component and the second offset component are connected together through the elastic component. The two ends of the elastic component are respectively connected to the first offset component and the second offset component. One end of the first offset component away from the second offset component is located in the main through hole, and one end of the second offset component away from the first offset component is located outside the substituting diameter-changing cylinder. The first biasing component includes an outer directional ball head, a first spring and a first connecting end. The two ends of the first spring are respectively connected to the outer directional ball head and the first connecting end. The first spring is between the outer directional ball head and the first connecting end. One end of the elastic component is connected to the first connecting end. The end of the first connecting end connected to the elastic component passes through the through hole on the longitudinal support plate and is embedded in the through hole of the replacement diameter reducing column and can slide in the through hole. The second biasing component includes an inner directional ball head, a second spring and a second connecting end, the two ends of the second spring are respectively connected to the inner directional ball head and the second connecting end, the second spring is between the inner directional ball head and the second connecting end, one end of the elastic component is connected to the second connecting end, and the end of the second connecting end connected to the elastic component is embedded in the through hole of the replacement diameter reducing cylinder and can slide in the through hole. The rod body of the ejection rod is located between the first connection end and the second connection end, and the elastic component is also connected to the rod body.

9. The self-adaptive variable diameter adjustment device for pile displacement according to claim 8, characterized in that: A groove is provided on one end of the first connection end and the second connection end close to the rod body, and the rod body passes through the groove. The elastic component includes a stretching deformation piece and a socket pin shaft, and the two ends of the stretching deformation piece are respectively fixedly connected to a socket pin shaft, the rod body is connected to the stretching deformation piece, and the socket pin shafts on the two ends of the stretching deformation piece are respectively snap-fitted and installed in the grooves of the first connecting end and the second connecting end, so that the two ends of the stretching deformation piece are respectively connected to the first connecting end and the second connecting end.

10. An adaptive variable diameter adjustment control method for pile driving deviation, applied to the adaptive variable diameter adjustment device for pile driving deviation as claimed in any one of claims 1 to 9, the method comprising the following steps: Step 1: Install the replacing diameter-changing column of the adaptive diameter-changing adjustment device on the pile pad at the top of the pipe pile, so that the pipe pile extends into the main through hole of the replacing diameter-changing column; Step 2: lower the pile hammer so that the hammer cap is pressed downward onto the replacement diameter reducing column. During the pressing process of the hammer cap, the hammer cap squeezes the ejection rod, so that the ejection rod gradually moves downward. The ejection rod drives the two ends of the offset adjustment assembly to approach each other, so that the hammer cap is gradually inserted into the replacement diameter reducing column and lowered into place; Step 3: Sink the pile. During the sinking process, the hammer core of the pile hammer hits the hammer cap. When the pile body of the pipe pile is tilted to one side and the tilt of the pipe pile is small, the pipe pile generates a first force on one end of the offset adjustment component. The end of the offset adjustment component close to the pipe pile directly rebounds after receiving the first force, so as to deflect the pipe pile away from the tilted side, so that the pipe pile is reset and remains vertical. When the pile body of the pipe pile continues to tilt to one side, making the tilting displacement larger, the displacement adjustment component is subjected to a second force acting on the pipe pile. Under the second force, the displacement adjustment component moves outward along the radial direction of the replacement diameter-changing cylinder. After the displacement adjustment component is subjected to a reaction force from the hammer cap, the outer displacement adjustment component again produces a tendency to deflect the pipe pile away from the tilting direction under the reaction force, so that the pipe pile is reset. Step 4: After the pile sinking is completed, lift the hammer cap until the ejection rod is not affected by the force of the hammer cap and is in a stress-free state, and the offset adjustment component returns to its initial position. The two ends of the offset adjustment component are not in contact with the pipe pile and the hammer cap respectively, or are in point contact with the pipe pile and the hammer cap, so that the two ends of the offset adjustment component are in contact with the pipe pile and the hammer cap and are in a stress-free state, so as to remove the hammer cap from the replacement diameter-changing column, and remove the replacement diameter-changing column from the pipe pile, and complete the recovery.

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