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

Abstract

The application discloses a self-adaptive variable-diameter adjusting device for pile sinking deviation and a control method. The device comprises a variable-diameter cylinder for pile sinking, an ejection rod and a deviation adjusting assembly installed on the variable-diameter cylinder for pile sinking. The variable-diameter cylinder for pile sinking comprises a main through hole arranged along the axial direction of the variable-diameter cylinder for pile sinking. The ejection rod is arranged along the axial direction of the variable-diameter cylinder for pile sinking. One end of the ejection rod is located outside one end of the variable-diameter cylinder for pile sinking in the axial direction, and the other end is connected with the deviation adjusting assembly. The deviation adjusting assembly is arranged along the radial direction of the variable-diameter cylinder for pile sinking, and both ends of the deviation adjusting assembly are located inside and outside the variable-diameter cylinder for pile sinking, respectively. During the pile sinking process, when the deviation adjusting assembly is subjected to a lateral force generated by the deviation of a pipe pile inserted into the main through hole, the deviation adjusting assembly provides a counterforce to the pipe pile to adjust the deviation of the pipe pile. The application can self-adaptively adjust the pile sinking deviation, reset the pipe pile and restore the pipe pile to a vertical state, avoid hammering eccentricity and facilitate recycling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile sinking construction devices, in particular to a self-adaptive diameter adjusting device for pile sinking deviation and a control method. BACKGROUND

[0002] During the pile sinking construction of a pipe pile, the pipe pile may deviate due to the influence of external environment, for example, the influence of complex marine environment, complex geology or severe wind and wave. The so-called deviation means that the pipe pile does not remain strictly vertical, but is inclined, the inclination exceeds the specification requirement, and the plane position exceeds the allowable value of the design requirement. When the pipe pile deviates during the pile sinking construction, the traditional solution is to rely on the experience of the on-site construction personnel, to measure the deviation of the pipe pile, and then to adjust the pipe pile according to the human judgment and by controlling the anchor cable of the pile boat, so as to adjust the deviation and make the pipe pile return to vertical. Such a solution relies on the experience of the construction personnel, and once the experience is insufficient, the deviation adjustment cannot be well implemented, or even although the deviation occurs, it is not adjusted due to the judgment of no deviation, which leads to the problem that the deviation is not timely and effectively adjusted after the deviation occurs, and the deviation of the pipe pile is gradually accumulated, which eventually leads to the deviation of the pipe pile exceeding the allowable deviation value of the specification, which seriously affects the construction of the pile cap on the pipe pile and the beam slab structure on the upper part of the pipe pile, and even causes potential engineering safety hazards.

[0003] In addition, the pile sinking construction of the offshore PHC pipe pile generally selects the heavy hammer light hitting mode, and a pile cushion needs to be placed on the top of the pile to avoid the direct impact of the pile hammer on the pile top, which may cause the pile top to be broken or deformed. When a purchased heavy pile hammer is used, the hammer cap of the pile hammer is used as a replacement device, and the size of the hammer cap is usually large. Therefore, a longitudinal wedge-shaped body is generally installed at the bottom of the hammer cap to reduce the distance between the hammer cap and the pipe pile body, so as to avoid the large hammer cap causing large hammering eccentricity. However, under the condition of severe wind and wave at sea, it is still difficult to avoid the large deviation of the pipe pile during the pile sinking process and to control the deviation, and the pile cushion is also prone to breaking and wear. In addition, the deviation of the pile sinking often causes the mutual extrusion of the pile body and the longitudinal wedge-shaped body installed at the bottom of the hammer cap, and the hammering force, which leads to cracking and damage during the continuous hammering process, and the pile sinking work efficiency is affected, and the pile sinking construction risk is increased.

[0004] In summary, the existing solutions for the deviation of the pipe pile during the pile sinking have respective defects, and cannot well adjust and restore the deviation of the pipe pile. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a self-adaptive diameter adjusting device for pile sinking deviation and a control method, which can solve the problems described in the background.

[0006] The technical scheme for achieving the object of the present application is a self-adaptive variable-diameter adjusting device for pile deviation, comprising a variable-diameter cylinder for pile driving, and an ejection rod and a deviation adjusting assembly installed on the variable-diameter cylinder for pile driving,

[0007] The variable-diameter cylinder for pile driving comprises a main through hole arranged along its own axial direction, the ejection rod is arranged along the axial direction of the variable-diameter cylinder for pile driving, the ejection rod is connected with the deviation adjusting assembly, one end of the ejection rod is located outside one end of the variable-diameter cylinder for pile driving in the axial direction, and the other end is connected with the deviation adjusting assembly,

[0008] The variable-diameter cylinder for pile driving is provided with a through hole arranged along the radial direction of the variable-diameter cylinder for pile driving, the deviation adjusting assembly is installed on the through hole, so that the deviation adjusting assembly is arranged along the radial direction of the variable-diameter cylinder for pile driving, and both ends of the deviation adjusting assembly are located on the inner side and the outer side of the variable-diameter cylinder for pile driving respectively, so that one end of the deviation adjusting assembly is located in the main through hole, and the other end is located on the outer side of the variable-diameter cylinder for pile driving away from the main through hole,

[0009] When the deviation adjusting assembly is subjected to a lateral extrusion force generated by the deviation of the pipe pile inserted into the main through hole, the deviation adjusting assembly provides a counterforce to the pipe pile after being subjected to the force, so as to adjust the deviation of the pipe pile.

[0010] Further, when the deviation adjusting assembly is subjected to a first force from the pipe pile, the end of the deviation adjusting assembly close to the pipe pile is directly subjected to a counterforce to the pipe pile after being subjected to extrusion deformation caused by the first force, so as to adjust the deviation of the pipe pile,

[0011] When the deviation adjusting assembly is subjected to a second force from the pipe pile on the basis of the first force, the second force > the first force, the end of the deviation adjusting assembly close to the pipe pile is first subjected to extrusion deformation and pushes the end of the deviation adjusting assembly away from the pipe pile to move away from the main through hole, the end of the deviation adjusting assembly away from the pipe pile is subjected to a counterforce from a hammer cap externally sleeved on the variable-diameter cylinder for pile driving, and the deviation adjusting assembly is finally subjected to a counterforce from the hammer cap to the pipe pile, so as to adjust the deviation of the pipe pile.

[0012] Further, the ejection rod comprises 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 greater than the diameter of the rod body, the end of the rod body away from the rod cap is connected with the deviation adjusting assembly, and the rod cap is located outside one end of the variable-diameter cylinder for pile driving in the axial direction.

[0013] Further, the self-adaptive variable-diameter adjusting device further comprises a plurality of annular rib plates, each annular rib plate is sleeved and fixed on the outer wall of the variable-diameter cylinder for pile driving along the circumferential direction of the variable-diameter cylinder for pile driving, and each annular rib plate is arranged in parallel and spaced apart along the axial direction of the variable-diameter cylinder for pile driving.

[0014] Further, the self-adapting variable adjusting device further comprises a plurality of longitudinal support plates, each of which is mounted around the outer wall of the variable diameter cylinder, and each of which is arranged in parallel and spaced apart, and the longitudinal support plates are arranged perpendicularly intersecting the annular rib plates.

[0015] The offset adjusting assembly is arranged on the position of the longitudinal support plate between two adjacent annular rib plates.

[0016] Further, the longitudinal support plate is provided with a guide hole, the rod body of the ejecting rod extends into the guide hole and can freely slide 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] Further, when the ejecting rod slides in the guide hole in the first direction, the ejecting rod can drive the two ends of the offset adjusting assembly to approach each other,

[0018] When the ejecting rod slides in the guide hole in the second direction, the ejecting rod can drive the two ends of the offset adjusting assembly to move away from each other,

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

[0020] Further, the offset adjusting assembly comprises an elastic assembly, a first offset assembly and a second offset assembly, the elastic assembly passes through the variable diameter cylinder along the radial direction of the variable diameter cylinder, the first offset assembly and the second offset assembly are connected together through the elastic assembly, the two ends of the elastic assembly are connected to the first offset assembly and the second offset assembly respectively, the end of the first offset assembly away from the second offset assembly is located in the main through hole, and the end of the second offset assembly away from the first offset assembly is located outside the variable diameter cylinder,

[0021] The first offset assembly comprises an outer directional ball head, a first spring and a first connecting end, the two ends of the first spring are connected to the outer directional ball head and the first connecting end respectively, the first spring is arranged between the outer directional ball head and the first connecting end, one end of the elastic assembly is connected to the first connecting end, and the end of the first connecting end connected to the elastic assembly is embedded and mounted on the through hole of the variable diameter cylinder through the through hole of the longitudinal support plate and can slide in the through hole,

[0022] The second offset assembly comprises an inner directional ball head, a second spring and a second connecting end, the two ends of the second spring are connected to the inner directional ball head and the second connecting end respectively, the second spring is arranged between the inner directional ball head and the second connecting end, one end of the elastic assembly is connected to the second connecting end, and the end of the second connecting end connected to the elastic assembly is embedded and mounted on the through hole of the variable diameter cylinder and can slide in the through hole,

[0023] The rod body of the ejecting rod is located between the first connecting end and the second connecting end, and the elastic assembly is further connected to the rod body.

[0024] Further, the first connecting end and the second connecting end are each provided with a groove near one end of the shaft body, the shaft body passes through the groove,

[0025] The elastic assembly comprises a tensile deformation piece and a socket pin shaft, the two ends of the tensile deformation piece are respectively fixedly connected with one socket pin shaft, the shaft body is connected with the tensile deformation piece, and the socket pin shaft on each end of the tensile deformation piece is respectively clamped and installed in the groove of the first connecting end and the second connecting end, so that the two ends of the tensile deformation piece are respectively connected with the first connecting end and the second connecting end.

[0026] A self-adaptive diameter adjustment control method for pile sinking deviation, applied to a self-adaptive diameter adjustment device for pile sinking deviation, comprising the following steps:

[0027] Step 1: install the alternative diameter adjustment cylinder of the self-adaptive diameter adjustment device on the pile mat at the top of the pipe pile, so that the pipe pile extends into the main through hole of the alternative diameter adjustment cylinder;

[0028] Step 2: lower the pile hammer, so that the hammer cap is pressed downward on the alternative diameter adjustment cylinder, and in the process of pressing downward, the hammer cap extrudes the ejection rod, so that the ejection rod gradually moves downward, the ejection rod drives the two ends of the deviation adjustment assembly to move close to each other, so that the hammer cap is gradually sleeved on the alternative diameter adjustment cylinder and is lowered into place;

[0029] Step 3: sink the pipe pile, and in the process of sinking, the hammer core of the pile hammer hits the hammer cap,

[0030] When the pile body of the pipe pile is inclined to one side and the inclination deviation is small, the pipe pile generates a first force on one end of the deviation adjustment assembly, and the end of the deviation adjustment assembly close to the pipe pile directly rebounds under the first force to deviate the pipe pile in the direction away from the inclined side, so that the pipe pile is reset to keep vertical,

[0031] When the pile body of the pipe pile continues to incline to one side, so that the inclination deviation is larger, the deviation adjustment assembly is subjected to a second force from the pipe pile, and under the second force, the deviation adjustment assembly moves outward along the radial direction of the alternative diameter adjustment cylinder, and after the deviation adjustment assembly is subjected to the reaction force of the hammer cap, the outer deviation adjustment assembly again generates a deviation trend of the pipe pile in the direction away from the inclined side under the reaction force, so that the pipe pile is reset;

[0032] Step 4: when the sinking is completed, the hammer cap is lifted until the ejection rod is not subjected to the force of the hammer cap and is in a force-free state, the deviation adjustment assembly returns to the initial position, the two ends of the deviation adjustment assembly 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 deviation adjustment assembly are in a force-free state in contact with the pipe pile and the hammer cap, to remove the hammer cap from the alternative diameter adjustment cylinder and remove the alternative diameter adjustment cylinder from the pipe pile, and the recycling is completed.

[0033] The beneficial effects of the present application are as follows: the present application can adaptively adjust the pile sinking deviation in different directions and different levels, reset the pipe pile, restore it to the vertical state, avoid hammering eccentricity, and can still realize deviation adjustment according to the deviation degree of different levels. When the pipe pile is slightly deviated by one hammering, the adaptive deviation adjustment can also be used to effectively reduce or eliminate the problem of small deviation accumulation caused by continuous hammering. When the pipe pile is greatly deviated by one hammering, the adaptive deviation adjustment can also be used to restore the pipe pile. And by arranging multiple deviation adjustment assemblies around the diameter-changing cylinder, multi-directional pipe pile deviation adjustment can be realized.

[0034] In addition, the deviation adjustment assembly can conveniently extend the pipe pile into the main through hole of the diameter-changing cylinder and set the hammer cap outside the diameter-changing cylinder by cooperating with the ejection rod, and also conveniently recycle the diameter-changing cylinder and the hammer cap. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0036] Figure 2 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure; Figure 1 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0037] Figure 3 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0038] Figure 4 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0039] Figure 5 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0040] Figure 6 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0041] Figure 7 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0042] Figure 8 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0043] Figure 9 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0044] Figure 10 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0045] Figure 11 The application is applied to the pile sinking process under the hammer cap, pile cushion and pipe pile, and the application schematic diagram is shown in the figure;

[0046] In the figure, 1-replacement diameter reducing device, 11-replacement diameter reducing column, 12-ejection rod, 121-rod cap, 122-shaft, 13-offset adjustment component, 131-outer 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, 139-tension deformation component, 14-longitudinal support plate, 15-annular rib plate, 2-pile pad, 3-pipe pile, 4-hammer cap. Detailed Implementation

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

[0048] like Figures 1-10 As shown, this embodiment provides an adaptive diameter adjustment device for pile driving misalignment, including a replacement diameter adjustment device 1. The replacement diameter adjustment device 1 includes a replacement diameter adjustment column 11, a launch rod 12, and an offset adjustment assembly 13 mounted on the replacement diameter adjustment column 11. The replacement diameter adjustment column 11 includes a main through hole arranged along its own axial direction, that is, the main through hole passes through the replacement diameter adjustment column 11 along its axial direction, and the main through hole is elongated. The main through hole is used to fit the adaptive diameter adjustment device onto the pipe pile 3 that needs to be driven, that is, when the pipe pile 3 is being driven, the replacement diameter adjustment column 11 is fitted onto the pipe pile 3 through the main through hole, and the pipe pile 3 extends into the main through hole. The replacement diameter adjustment column 11 is used to support and install a hammer cap 4, which is fitted onto the replacement diameter adjustment column 11, that is, the hammer cap 4 is fitted onto the outside of the replacement diameter adjustment column 11.

[0049] The ejector rod 12 is arranged along the axial direction of the replacement variable diameter column 11. The ejector rod 12 is connected to the offset adjustment assembly 13. One end of the ejector rod 12 is located outside the axial end of the replacement variable diameter column 11, and the other end is connected to the offset adjustment assembly 13. The ejector 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 greater than the maximum radial width of the rod body 122. The 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 replacement variable diameter column 11. The variable diameter column 11 is provided with a through hole, which is arranged radially along the variable diameter column 11. The offset adjustment component 13 is installed through the through hole, so that the offset adjustment component 13 is arranged radially along the variable diameter column 11. The two ends of the offset adjustment component 13 are located on the inner and outer sides of the variable diameter column 11, respectively, 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 variable diameter column 11 away from the main through hole.

[0050] When the bias adjustment assembly 13 is subjected to the force of the external object, the bias adjustment assembly 13 is deformed to generate a reaction force acting on the external object, so as to adjust the pile bias. When the external object is the pipe pile 3, the pipe pile 3 forms a force on the bias adjustment assembly 13 due to the bias, and the force can directly or indirectly act on the pipe pile 3, so as to ultimately adjust the pipe pile 3 bias to restore to vertical.

[0051] More specifically, when the external object generates a first force on the bias adjustment assembly 13, due to the small first force, only the end of the external object in contact with the bias adjustment assembly 13 is deformed, and due to the deformation, the bias adjustment assembly 13 directly generates a reaction force on the external object, and the bias adjustment assembly 13 does not displace under the first force and remains fixed in position. Therefore, when the external object is the pipe pile 3, the pipe pile 3 is inclined due to the bias, and the inclined pipe pile 3 will extrude the end of the bias adjustment assembly 13 inserted into the main through hole, and the end of the bias adjustment assembly 13 close to the pipe pile 3 will generate a reaction force due to the extrusion, and the reaction force directly acts on the pipe pile 3 to generate a movement trend in the direction opposite to the inclination direction, thereby adjusting the pipe pile 3 bias, and ultimately restoring the pipe pile 3 to vertical.

[0052] When the external object generates a second force on the bias adjustment assembly 13, the second force > the first force, and the second force is large enough to make the entire bias adjustment assembly 13 move along the radial direction of the pile driving variable diameter cylinder 11 and move from inside to outside or from outside to inside, so that the two ends of the bias adjustment assembly 13 approach or move away from each other, and the bias adjustment assembly 13 ultimately acts on the pipe pile 3 in the main through hole, thereby adjusting the pipe pile 3 bias.

[0053] Illustratively, the self-adaptive variable diameter adjusting device further comprises a plurality of annular rib plates 15, each annular rib plate 15 is sleeved along the circumferential direction of the pile driving variable diameter cylinder 11 and fixed on the outer wall of the pile driving variable diameter cylinder 11, and each annular rib plate 15 is arranged in parallel and spaced apart along the axial direction of the pile driving variable diameter cylinder 11.

[0054] Illustratively, the self-adaptive variable diameter adjusting device further comprises a plurality of longitudinal support plates 14, each longitudinal support plate 14 is mounted around the outer wall of the pile driving variable diameter cylinder 11, and each longitudinal support plate 14 is arranged in parallel and spaced apart. The longitudinal support plate 14 and the annular rib plate 15 are arranged perpendicularly and cross each other.

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

[0056] When the ejecting rod 12 slides in the guide hole along the first direction, the ejecting rod 12 can drive the two ends of the offset adjusting assembly 13 to approach each other, so that the two ends of the offset adjusting assembly 13 approach the direction of the alternative variable diameter cylinder 11, so that the pipe pile 3 can extend into the main through hole, and so that the hammer cap 4 can be sleeved on the outside of the alternative variable diameter cylinder 11. When the ejecting rod 12 slides in the guide hole along the second opposite direction, the ejecting rod 12 can drive the two ends of the offset adjusting assembly 13 to move away from each other, so that the two ends of the offset adjusting assembly 13 move away from the direction of the alternative variable diameter cylinder 11, so that the two ends of the offset adjusting assembly 13 return to the initial position. Thus, after the pipe pile 3 extends into the main through hole and the hammer cap 4 is sleeved on the alternative variable diameter cylinder 11, the offset adjusting assembly 13 can be affected by 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 inclined, and then the offset adjusting assembly 13 adjusts the offset of the pipe pile 3.

[0057] The first direction and the second direction are 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] The offset adjusting assembly 13 is installed on the longitudinal support plate 14 and located at the part of the longitudinal support plate 14 between the two adjacent annular rib plates 15.

[0059] The annular rib plate 15 and the longitudinal support plate 14 both reinforce and support the alternative variable diameter cylinder 11.

[0060] The offset adjusting assembly 13 includes an elastic assembly 137, a first offset assembly, and a second offset assembly. The elastic assembly 137 passes through the alternative variable diameter cylinder 11 along the radial direction of the alternative variable diameter cylinder 11. The first offset assembly and the second offset assembly are connected together through the elastic assembly 137. The two ends of the elastic assembly 137 are connected to the first offset assembly and the second offset assembly, respectively. The end of the first offset assembly away from the second offset assembly is located in the main through hole, and the end of the second offset assembly away from the first offset assembly is located on the outside of the alternative variable diameter cylinder 11. The first offset assembly and the second offset assembly can approach and move away from each other due to the deformable property of the elastic assembly 137.

[0061] The first offset 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 positioned between the outer directional ball head 131 and the first connecting end 133. One end of an elastic component 137 is connected to the first connecting end 133, thereby connecting the elastic component 137 to the first offset assembly. The end of the first connecting end 133 connected to the elastic component 137 passes through a through hole on the longitudinal support plate 14 and is embedded in a through hole in the replacement variable diameter column 11, and can slide within the through hole, thereby allowing the first connecting end 133 to move along the through hole towards the inside (i.e., towards the main through hole) or the outside (i.e., away from the main through hole) of the replacement variable diameter column 11.

[0062] The second offset 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 positioned between the inner directional ball head 136 and the second connecting end 134. One end of an elastic component 137 is connected to the second connecting end 134, thereby connecting the elastic component 137 to the second offset assembly. The end of the second connecting end 134 connected to the elastic component 137 is embedded in a through hole in the replacement variable diameter column 11 and can slide within the through hole, thereby allowing the second connecting end 134 to move along the through hole towards the inside (i.e., towards the main through hole) or the outside (i.e., away from the main through hole) of the replacement variable diameter column 11.

[0063] The rod body 122 of the ejector rod 12 is located between the first connecting end 133 and the second connecting end 134. The elastic component 137 is also connected to the rod body 122, so that when the ejector rod 12 moves along the first direction, the ejector rod 12 causes the elastic component 137 to deform and stretch downwards, and the elastic component 137 pulls the first offset component and the second offset component closer to each other. Conversely, when the ejector rod 12 moves along the second direction, the ejector rod 12 causes the elastic component 137 to deform upwards, and first returns to its natural state before deforming and stretching upwards again, and the elastic component 137 pulls the first offset component and the second offset component away from each other, and gradually returns to the initial position (i.e., the position of the first offset component and the second offset component in their natural state when the elastic component 137 is in its natural state), and then starts to move closer to each other again from the initial position.

[0064] refer to Figure 6 , Figure 6 The arrow in the image indicates the direction of force or movement. Figure 6From left to right, the ejection rod 12 moves downward along the first direction, the elastic assembly 137 pulls the first and second offset components to move closer to each other in the horizontal direction, and finally the first and second connecting ends 133 and 134 are attached to each other. Then, the ejection rod 12 moves upward along the second direction, under the combined action of the rebound force of the elastic assembly 137 and the pulling force of the upward movement of the ejection rod 12, the first and second offset components first move away from each other, then move closer to each other again, and the first and second connecting ends 133 and 134 are attached to each other again.

[0065] For example, the first and second connecting ends 133 and 134 are provided with a groove at one end of the rod body 122, and the rod body 122 passes through the groove, so that when the first and second connecting ends 133 and 134 are attached to each other, the ejection rod 12 can also slide along the first or second direction.

[0066] For example, the elastic assembly 137 includes a stretchable deformer 139 and a socket pin shaft 138, and the two ends of the stretchable deformer 139 are respectively fixedly connected with a socket pin shaft 138. The rod body 122 is connected with the stretchable deformer 139, and the socket pin shafts 138 at the two ends of the stretchable deformer 139 are respectively fitted and installed in the grooves of the first and second connecting ends 133 and 134, so that the two ends of the stretchable deformer 139 are respectively connected with the first and second connecting ends 133 and 134.

[0067] For example, the stretchable deformer 139 is a rubber band, which can be a high-elasticity rubber band used in industry. The rubber band is connected with the socket pin shaft 138 through a rubber sleeve fitted on the socket pin shaft 138.

[0068] Reference Figure 11 Based on the self-adaptive diameter adjustment device for pile offset, the present example also provides a self-adaptive diameter adjustment control method for pile offset, which includes the following steps:

[0069] Step 1: Install the alternative diameter adjustment cylinder 11 of the self-adaptive diameter adjustment device on the pile mat 2 at the top of the pipe pile 3, so that the pipe pile 3 extends into the main through hole of the alternative diameter adjustment cylinder 11.

[0070] Step 2: Lower the pile hammer, so that the hammer cap 4 is pressed downward on the alternative diameter adjustment cylinder 11. During the pressing process of the hammer cap 4, the hammer cap 4 extrudes the rod cap 121 of the ejection rod 12, so that the ejection rod 12 gradually moves downward, and the elastic assembly 137 moves downward under the action of the ejection rod 12. The elastic assembly 137 synchronously pulls the two ends of the offset adjustment component to move 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 sleeved on the alternative diameter adjustment cylinder 11 and is lowered to the position.

[0071] Step 3: Drive the pipe pile 3 into the ground. During the driving process, the hammer core of the pile hammer strikes the hammer cap 4.

[0072] When the pile body of pipe pile 3 tilts and deviates to one side, for example, according to Figure 1 In the example shown, when the pile 3 tilts to the right, the force exerted by the pile 3 on one end of the offset adjustment component 13 is small. This means the second spring 135 connected to the inner directional ball head 136 on the second offset component is compressed downwards. The second spring 135 rebounds after being stressed, tilting the pile 3 to the left, thus restoring it to its vertical position. During this process, the force exerted by the pile 3 on the second spring 135 is small and insufficient to fully compress the second spring 135 to its limit position. This significantly reduces the problem of excessive offset gradually accumulating due to the inability to control small offsets during pile driving.

[0073] When the pile body of the pipe pile 3 continues to tilt to one side, resulting in a large tilt deviation, the deviation adjustment component 13 is subjected to the force of the pipe pile 3. The deviation adjustment component 13 moves outward radially along the replacement diameter reducing column 11, that is, the outer directional ball head 131 moves outward radially and squeezes the hammer cap 4. After the outer directional ball head 131 is subjected to the reaction force of the hammer cap 4, it exerts a force on the first spring 132. The first spring 132 then exerts a reaction force on the inner directional ball head 136 after passing through the first connecting end 133, the second connecting end 134, and the second spring 135 in sequence. Under the reaction force, the inner directional ball head 136 again tends to deflect the pipe pile 3 away from the tilting direction, causing the pipe pile 3 to return to its original position and remain vertical. Similarly, since the pipe pile 3 is provided with deviation adjustment components 13 in each direction, the pipe pile 3, after swinging and tilting back and forth and being subjected to the action of the deviation adjustment components 13 in each direction, eventually returns the pipe pile 3 to its original position and remains vertical.

[0074] Step 4: After pile driving is completed, lift the hammer cap 4 until the ejector rod 12 is no longer under 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. The two ends of the offset adjustment component 13 are not in contact with the pipe pile 3 and the hammer cap 4, or they 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 a stress-free state when in contact with the pipe pile 3 and the hammer cap 4. Thus, 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, completing the recovery.

[0075] The present application can adaptively adjust the pile sinking deviation in different directions and different levels, restore the pipe pile to the vertical state, and can still realize the deviation adjustment according to the deviation degree of different levels. When the pipe pile 3 is deviated by a small amount by one hammering, the adaptive deviation adjustment can also be used to effectively reduce or eliminate the problem of accumulated large deviation caused by continuous hammering. When the pipe pile 3 is deviated by a large amount by one hammering, the adaptive deviation adjustment can also be used to restore the pipe pile 3 to the right position. And by arranging multiple deviation adjustment assemblies 13 circumferentially on the alternative diameter cylinder 11, multi-directional deviation adjustment of the pipe pile 3 can be realized.

[0076] In addition, the deviation adjustment assembly 13 can conveniently extend the pipe pile 3 into the main through hole of the alternative diameter cylinder 11 and set the hammer cap 4 outside the alternative diameter cylinder 11 by cooperating with the ejection rod 12, and also can conveniently recover the alternative diameter cylinder 11 and the hammer cap 4.

[0077] The embodiments disclosed in the specification are only an example of the one-sided features of the present application, and the protection scope of the present application is not limited to this embodiment. Any other functionally equivalent embodiments fall within the protection scope of the present application. For those skilled in the art, other various corresponding changes and modifications can be made according to the above described technical solutions and concepts, and all these changes and modifications should belong to the protection scope of the claims of the present application.

Claims

1. An adaptive diameter adjustment device for pile driving misalignment, characterized in that, This includes a replacement variable diameter column, and a catapult rod and offset adjustment assembly mounted on the replacement variable diameter column. The replacement variable diameter column includes a main through hole arranged along its own axial direction. A ejector rod is arranged along the axial direction of the replacement variable diameter column and is connected to an offset adjustment assembly. One end of the ejector rod is located outside one axial end of the replacement variable diameter column, and the other end is connected to the offset adjustment assembly. The reducing cylinder has a through hole arranged radially along its diameter. An offset adjustment component passes through and is installed in the through hole, such that the offset adjustment component is radially aligned with the reducing cylinder. The two ends of the offset adjustment component are located on the inner and outer sides of the reducing cylinder, respectively, with one end of the component inside the main through hole and the other end on the outer side of the reducing cylinder away from the main through hole. When the offset adjustment component is subjected to a lateral compressive force caused by the displacement of the pipe pile inserted into the main through hole, the offset adjustment component provides a reaction force to the pipe pile to adjust the pipe pile's displacement. The adaptive diameter adjustment device also includes several longitudinal support plates, each of which is mounted around the outer wall of the diameter-adjusting column, and the longitudinal support plates are arranged in parallel at intervals. The offset adjustment assembly includes an elastic component, a first offset component, and a second offset component. The elastic component passes through the reducing cylinder radially. The first offset component and the second offset component are connected together by the elastic component. The two ends of the elastic component 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 inside the main through hole, and the end of the second offset component away from the first offset component is located outside the reducing cylinder. The first offset assembly 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 positioned between the outer directional ball head and the first connecting end. One end of the elastic assembly is connected to the first connecting end. The end of the first connecting end connected to the elastic assembly passes through a through hole in the longitudinal support plate and is then embedded in a through hole in the variable diameter column, allowing it to slide within the through hole. The second offset assembly 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, and the second spring is positioned between the inner directional ball head and the second connecting end. The other end of the elastic assembly is connected to the second connecting end. The end of the second connecting end connected to the elastic assembly is embedded in a perforation in the reducing cylinder and can slide within the perforation. The launch rod is located between the first connecting end and the second connecting end, and the elastic component is also connected to the rod.

2. The adaptive diameter adjustment device for pile driving misalignment according to claim 1, characterized in that, When the offset adjustment component is subjected to the first force from the pipe pile, the end of the offset adjustment component closest to the pipe pile undergoes extrusion deformation after being subjected to the first force, and then directly provides a reaction force to the pipe pile to adjust the offset of the pipe pile. When the offset adjustment component is subjected to the force of the pipe pile on the basis of the first force, it reaches the second force. The second force is greater than the first force. The end of the offset adjustment component near the pipe pile first undergoes extrusion deformation, which pushes the end of the offset adjustment component away from the pipe pile away from the main through hole. The end of the offset adjustment component away from the pipe pile is subjected to the reaction force of the hammer cap externally sleeved on the replacement diameter column. After being subjected to the reaction force from the hammer cap, the offset adjustment component finally acts on the pipe pile, thereby adjusting the offset of the pipe pile.

3. The adaptive diameter adjustment device for pile driving misalignment according to claim 2, characterized in that, The launch bar includes a cap and a shaft. The cap is fixedly connected to one end of the shaft, and the diameter of the cap is larger than the diameter of the shaft. The end of the shaft away from the cap is connected to the offset adjustment assembly. The cap is located outside the axial end of the replacement variable diameter column.

4. The adaptive diameter adjustment device for pile driving misalignment according to claim 3, characterized in that, The adaptive diameter adjustment device also includes several annular ribs, each annular rib being sleeved along the circumference of the variable diameter column and fixed on the outer wall of the variable diameter column, and each annular rib being arranged parallel to each other along the axial direction of the variable diameter column.

5. The adaptive diameter adjustment device for pile driving misalignment according to claim 4, characterized in that, The longitudinal support plate and the annular rib plate are arranged perpendicularly and intersecting each other. The offset adjustment component is located on the longitudinal support plate between two adjacent annular ribs.

6. The adaptive diameter adjustment device for pile driving misalignment according to claim 5, characterized in that, The longitudinal support plate is provided with a guide hole, and the rod body of the ejector 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, which is greater than the diameter of the rod body.

7. The adaptive diameter adjustment device for pile driving misalignment according to claim 6, characterized in that, When the ejector rod slides within the guide hole along the first direction, it can cause the two ends of the offset adjustment assembly to move closer together. When the ejector rod slides within the guide hole along the second direction, it can cause the two ends of the offset adjustment assembly to move away from each other. The first direction and the second direction are two opposite directions.

8. The adaptive diameter adjustment device for pile driving misalignment according to claim 1, characterized in that, Both the first and second connecting ends have a groove at the end closest to the rod body, through which the rod body passes. The elastic component includes a tensile deformation member and a socket pin. A socket pin is fixedly connected to each end of the tensile deformation member. The rod body is connected to the tensile deformation member. The socket pins on both ends of the tensile deformation member are respectively engaged in the grooves of the first connecting end and the second connecting end, so that the two ends of the tensile deformation member are respectively connected to the first connecting end and the second connecting end.

9. An adaptive diameter adjustment control method for pile driving misalignment, applied to the adaptive diameter adjustment device for pile driving misalignment as described in any one of claims 1-8, the method comprising the following steps: Step 1: Install the adaptive diameter adjustment device onto the pile pad at the top of the pipe pile, so that the pipe pile extends into the main through hole of the adaptive diameter adjustment device. Step 2: Lower the pile hammer so that the hammer cap presses down onto the replacement variable diameter column. During the downward pressing of the hammer cap, the hammer cap squeezes the ejector rod, causing the ejector rod to gradually move down. The ejector rod drives the two ends of the offset adjustment component to move closer to each other, so that the hammer cap gradually fits onto the replacement variable diameter column and is lowered into place. Step 3: Drive the pipe piles. During the driving process, the hammer core of the pile hammer strikes the hammer cap. When the pipe pile tilts to one side, and the tilt is small, the pipe pile exerts a first force on one end of the offset adjustment component. The end of the offset adjustment component closest to the pipe pile rebounds immediately after receiving this first force, tilting the pipe pile away from the tilted side and restoring it to its vertical position. When the pile body continues to tilt to one side, making the tilt deviation larger, the deviation adjustment component is subjected to the second force of the pile. Under the second force, the deviation adjustment component moves outward along the radial direction of the variable diameter column. After the deviation adjustment component is subjected to the reaction force of the hammer cap, the deviation adjustment component will again tend to deviate from the tilt direction of the pile under the reaction force, so that the pile is reset. Step 4: After pile driving is completed, lift the hammer cap until the ejector rod is no longer under the force of the hammer cap and is in a stress-free state. 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, or they are in point contact with the pipe pile and the hammer cap, so that the two ends of the offset adjustment component are in a stress-free state when in contact with the pipe pile and the hammer cap, so that the hammer cap can be removed from the replacement variable diameter column and the replacement variable diameter column can be removed from the pipe pile, thus completing the recovery.

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