Pile driver with self-righting function

Abstract

The present application relates to the technical field of vibration hammer, particularly relates to a pile driver with self-righting function, which comprises a fixing frame, a shell, a first rotating shaft, a second rotating shaft, an adjusting assembly, a pendulum weight and a driving assembly, the shell is slidably arranged on the fixing frame, the first rotating shaft and the second rotating shaft are rotatably arranged on the shell, the second rotating shaft rotates around the first rotating shaft on the shell, and the first rotating shaft and the second rotating shaft generate a resultant force perpendicular to the connecting line direction when rotating and drive the shell to slide on the fixing frame; the adjusting assembly is used for driving the second rotating shaft to rotate around the first rotating shaft; the pendulum weight is rotatably arranged on the fixing frame, and the gravity center of the pendulum weight is located below the rotating axis; and the driving assembly is used for driving the shell to rotate when the gravity center of the pendulum weight is located on the pile shaft line. The adjusting assembly is arranged, the position of the second rotating shaft relative to the first rotating shaft is changed, the direction of the resultant force generated by the first rotating shaft and the second rotating shaft when rotating is changed, and the inclined pile can be righted.

Description

Technical Field

[0001] This invention relates to the field of vibratory hammer technology, and in particular to a pile driver with a self-aligning function. Background Technology

[0002] In the field of construction engineering, vibratory hammers play a crucial role in pile construction due to their periodic vibrations. They liquefy the soil around the pile through high-frequency vibrations, significantly reducing soil resistance and enabling rapid pile driving. This ensures close contact between the pile casing and deep, hard soil, providing a stable foundation for the building structure.

[0003] When a vibratory hammer continuously strikes a foundation pile, the reaction force acts on the pile, causing it to deviate from its sinking path and tilt. Tiltped piles fail to meet the verticality requirements of the project and are considered substandard construction. If such substandard piles are put into use, it will lead to uneven stress on the building structure, greatly increasing the risk of later structural cracking, settlement, and even collapse, posing a serious threat to building safety. Summary of the Invention

[0004] Therefore, it is necessary to provide a pile driver with a self-straightening function to address the current problem of pile tilting during settlement.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A self-aligning pile driver includes a fixed frame, a vibration mechanism, a clamping mechanism, and a detection mechanism. The fixed frame is rotatably mounted around the axis of the foundation pile. The vibration mechanism includes a housing, a first rotating shaft, a second rotating shaft, and an adjustment assembly. The housing is slidably mounted on the fixed frame. The first and second rotating shafts are rotatably mounted on the housing, and the second rotating shaft rotates around the first rotating shaft on the housing. The first and second rotating shafts are parallel and extend along a first direction perpendicular to the direction of the foundation pile axis. A gap is provided between the first and second rotating shafts, and eccentric blocks are respectively provided on the first and second rotating shafts. When the first and second rotating shafts rotate, they generate a resultant force perpendicular to the direction of the line connecting them. The housing is driven to slide on the fixed frame; the adjusting component is used to drive the second rotating shaft to rotate around the first rotating shaft; the clamping mechanism includes a mounting plate and a gripper, the mounting plate is slidably disposed on the housing and rotatably connected to the housing, and the gripper is used to clamp the foundation pile; the detection mechanism includes a pendulum and a driving component, the pendulum is rotatably disposed on the fixed frame, the rotation axis of the pendulum extends along the first direction, the center of gravity of the pendulum is located below its rotation axis, the axis of the foundation pile coincides with the rotation axis of the mounting plate and the extension line passes through the rotation axis of the pendulum, the fixed frame, housing, mounting plate and foundation pile are arranged sequentially along the axial direction of the foundation pile; the driving component is used to drive the housing to rotate when the center of gravity of the pendulum is located on the axis of the foundation pile.

[0007] Preferably, the adjustment assembly includes a sliding frame and a power component. The housing is provided with an arc groove, which is coaxial with the first rotating shaft. The second rotating shaft is slidably disposed in the arc groove. The sliding frame is slidably disposed in the housing along a second direction, which is perpendicular to the first direction and the extension direction of the pile axis. The sliding frame is provided with a guide groove, and the second rotating shaft is slidably disposed in the guide groove along the second direction. The guide groove is inclined in the second direction and gradually moves away from the mounting plate from the side near the first rotating shaft to the side near the second rotating shaft. The power component is used to drive the sliding frame to slide in the housing.

[0008] Preferably, when the foundation pile is vertical, the center of gravity of the pendulum is located on the axis of the foundation pile and can rotate bidirectionally around its own axis of rotation. The first and second rotating shafts are located on the same horizontal plane, and the second rotating shaft is spaced apart from the two ends of the guide groove and the arc groove extension direction, respectively. There are two power components, which are located on both sides of the slide frame in the second direction.

[0009] Preferably, the drive assembly includes a fixed column, a slider, and a rotating wheel. The fixed column is disposed between the housing and the mounting plate. The mounting plate is connected to the housing via the fixed column. The mounting plate is rotatably connected to the fixed column and slidably connected along the axial direction of the mounting plate. A helical groove is provided on the circumferential surface of the fixed column. The slider is slidably disposed in the helical groove. The rotating wheel is rotatably disposed on the slider and rotates unidirectionally relative to the slider. The rotating wheel is always in contact with the mounting plate. When the housing and the mounting plate move away from each other, the rotating wheel can rotate relative to the slider.

[0010] Preferably, the drive assembly further includes a second spring disposed in a helical groove for providing a thrust to the slider toward the mounting plate.

[0011] Preferably, the drive assembly further includes a second pull rope, which is sleeved inside the second spring, with one end of the second pull rope connected to the slider and the other end of the second pull rope passing through the fixed post and the housing and connected to the slide frame.

[0012] Preferably, the fixing frame is provided with a guide post that extends along the axial direction of the foundation pile. The shell is provided with an ear plate, the guide post passes through the ear plate and is slidably connected to the ear plate. The guide post is provided with a baffle plate located on the side of the ear plate close to the foundation pile. A third spring and a fourth spring are sleeved on the guide post. The two ends of the third spring are connected to the baffle plate and the ear plate respectively, and the two ends of the fourth spring are connected to the ear plate and the fixing frame respectively.

[0013] Preferably, the housing is equipped with a motor, which drives the first rotating shaft to rotate. The first rotating shaft and the second rotating shaft are respectively fitted with gears of the same size, and the two gears mesh.

[0014] Preferably, the gripper includes multiple clamping plates, each clamping plate being rotatably connected to the mounting plate. The multiple clamping plates are evenly distributed around the axis of the mounting plate. The mounting plate is provided with multiple hydraulic rods, each hydraulic rod corresponding to one clamping plate. One end of the hydraulic rod is rotatably mounted on the mounting plate, and the other end is rotatably mounted on the clamping plate.

[0015] Preferably, the pile driver with self-aligning function also includes a loading mechanism, which is used to lift the fixed frame. The fixed frame is provided with lifting lugs, which are rotatably connected to the fixed frame. The axis of the pile coincides with the rotation axis of the lifting lugs, and the lifting lugs are connected to the loading mechanism through steel cables.

[0016] The beneficial effects of this invention are as follows: Through the rotational cooperation of the housing and the mounting plate, the housing can rotate relative to the mounting plate; a pendulum is provided, and when the foundation pile is vertically inserted into the pit, the center of gravity of the pendulum is located on the extended line of the foundation pile's axis, and the drive assembly drives the housing to rotate around the foundation pile's axis. When the foundation pile tilts, the housing and the fixing frame also tilt, and the pendulum rotates around its own axis due to its own weight. An adjustment assembly is provided to change the position of the second rotating shaft relative to the first rotating shaft, thereby changing the direction of the resultant force generated by the rotation of the first and second rotating shafts, which can help to straighten the tilted foundation pile. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a pile driver with self-aligning function provided in an embodiment of the present invention;

[0018] Figure 2 A front view of a pile driver with self-aligning function provided in an embodiment of the present invention;

[0019] Figure 3 A top view of a pile driver with self-aligning function provided in an embodiment of the present invention;

[0020] Figure 4 for Figure 3 Sectional view along the middle AA direction;

[0021] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0022] Figure 6 for Figure 4 Enlarged view of point D in the middle;

[0023] Figure 7 for Figure 3 Sectional view along the BB direction;

[0024] Figure 8 This is a schematic diagram of the structure of a drive assembly for a pile driver with self-aligning function, provided in an embodiment of the present invention.

[0025] Figure 9A split diagram of a drive assembly for a pile driver with self-aligning function provided in an embodiment of the present invention;

[0026] Figure 10 This is a schematic diagram of the sliding frame of a pile driver with self-aligning function, provided in an embodiment of the present invention.

[0027] in:

[0028] 101. Fixing frame; 102. Guide post; 103. Ear plate; 104. Baffle; 105. Third spring; 106. Fourth spring; 107. Rotating column; 108. U-shaped rod; 109. Receiving groove; 110. Sealing plate; 111. Protective shell; 121. Shell; 122. First rotating shaft; 123. Second rotating shaft; 124. Arc groove; 125. Slide plate; 126. Connecting plate; 127. First pull... 128. Rope; 129. First spring; 130. Guide groove; 141. Motor; 142. Pendulum; 143. Fixed column; 144. Slider; 145. Rotating wheel; 146. Groove; 147. Cylinder; 148. Base; 149. Spiral groove; 150. Fixed shaft; 151. Second spring; 152. Second pull rope; 153. Mounting plate; 154. Clamping plate; 155. Hydraulic rod; 156. Pull plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0030] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] like Figures 1 to 10 As shown, this embodiment of the invention provides a pile driver with self-aligning function, including a fixed frame 101, a vibration mechanism, a clamping mechanism, and a detection mechanism. The fixed frame 101 is rotatably arranged around the axis of the foundation pile. The vibration mechanism includes a housing 121, a first rotating shaft 122, a second rotating shaft 123, and an adjustment assembly. The housing 121 is slidably disposed on the fixed frame 101. The first rotating shaft 122 and the second rotating shaft 123 are rotatably disposed on the housing 121, and the second rotating shaft 123 rotates around the first rotating shaft 122 on the housing 121. The first rotating shaft 122 and the second rotating shaft 123 are arranged parallel to each other and extend along a first direction, which is perpendicular to the extension direction of the foundation pile axis. There is a gap between the first rotating shaft 122 and the second rotating shaft 123, and eccentric blocks are respectively provided on the first rotating shaft 122 and the second rotating shaft 123. When the first rotating shaft 122 and the second rotating shaft 123 rotate, they generate a force perpendicular to the axis of the pile. The resultant force in the linear direction drives the housing 121 to slide on the fixed frame 101; the adjusting component is used to drive the second rotating shaft 123 to rotate around the first rotating shaft 122; the clamping mechanism includes a mounting plate 152 and a gripper, the mounting plate 152 is slidably disposed on the housing 121 and rotatably connected to the housing 121, and the gripper is used to clamp the foundation pile; the detection mechanism includes a pendulum 141 and a driving component, the pendulum 141 is rotatably disposed on the fixed frame 101, the rotation axis of the pendulum 141 extends along the first direction, the center of gravity of the pendulum 141 is located below its rotation axis, the axis of the foundation pile coincides with the rotation axis of the mounting plate 152 and the extension line passes through the rotation axis of the pendulum 141, the fixed frame 101, the housing 121, the mounting plate 152 and the foundation pile are arranged sequentially along the axial direction of the foundation pile; the driving component is used to drive the housing 121 to rotate when the center of gravity of the pendulum 141 is located on the axis of the foundation pile.

[0033] Through the rotational engagement of the housing 121 and the mounting plate 152, the housing 121 can rotate relative to the mounting plate 152. A pendulum 141 is provided; when the foundation pile is vertically inserted into the pit, the center of gravity of the pendulum 141 is located on the extended axis of the foundation pile, and the drive assembly drives the housing 121 to rotate around the axis of the foundation pile. When the foundation pile tilts, the housing 121 and the fixing frame 101 also tilt, and the pendulum 141 rotates around its own axis due to its own weight. An adjustment assembly is provided to change the position of the second rotating shaft 123 relative to the first rotating shaft 122, thereby changing the direction of the resultant force generated by the rotation of the first rotating shaft 122 and the second rotating shaft 123 and generating a component force that can straighten the tilted foundation pile.

[0034] In this embodiment, the adjustment component includes a sliding frame and a power component. The housing 121 is provided with an arc groove 124, which is coaxial with the first rotating shaft 122. The second rotating shaft 123 is slidably disposed in the arc groove 124 via a bearing. The sliding frame is slidably disposed in the housing 121 along a second direction, which is perpendicular to the first direction and the extension direction of the pile axis. The sliding of the sliding frame along the second direction allows the second rotating shaft 123 to slide in the arc groove 124, thereby changing the extension direction of the line connecting the first rotating shaft 122 and the second rotating shaft 123. The sliding frame is provided with a guide groove 129, in which the second rotating shaft 123 is slidably disposed along the second direction. The guide groove 129 is inclined in the second direction and gradually moves away from the mounting plate 152 from the side near the first rotating shaft 122 to the side near the second rotating shaft 123. The inclination angle of the guide groove 129 is small, and the polarization force generated by the rotation of the second rotating shaft 123 is insufficient to push the sliding frame to slide along the second direction. The power component is used to drive the slide frame to slide within the housing 121.

[0035] In this embodiment, when the foundation pile is vertical, the center of gravity of the pendulum 141 is located on the axis of the foundation pile and can rotate bidirectionally around its own rotation axis. The first rotating shaft 122 and the second rotating shaft 123 are located on the same horizontal plane. The second rotating shaft 123 is spaced apart from the two ends of the extension direction of the guide groove 129 and the arc groove 124, respectively. There are two power components, which are located on both sides of the slide frame in the second direction.

[0036] Specifically, the sliding frame includes two sliding plates 125 and two connecting plates 126. The two sliding plates 125 are arranged in a first direction within the housing 121 and are slidably connected to the housing 121 in a second direction. A guide groove 129 is provided on the sliding plate 125. A slide rail is provided inside the housing 121, and the sliding plate 125 is slidably disposed in the slide rail. The two connecting plates 126 are located on both sides of the two sliding plates 125 in the second direction and are respectively fixedly connected to the two sliding plates 125. Each power component includes a first pull rope 127 and two first springs 128. One end of the first pull rope 127 is connected to one of the connecting plates 126, and the other end of the first pull rope 127 passes through the housing 121 and is slidably connected to the housing 121. One end of each first spring 128 is connected to the connecting plate 126 connected to the first pull rope 127, and the other end of the first spring 128 contacts the housing 121. The first spring 128 extends and retracts in the second direction, and the first pull rope 127 can pull the connecting plate 126 to compress the first spring 128. When the foundation pile tilts, the pendulum 141 can be deflected by rotating the shell 121 by a maximum of 90°. The first rope 127 on the side to which the pendulum 141 tilts is pulled, which improves the detection efficiency and allows the foundation pile to be corrected more quickly.

[0037] In another embodiment, when the foundation pile is vertical, the pendulum 141, with its center of gravity located on the axis of the foundation pile, can rotate unidirectionally around its own axis. A power component is also provided, located on one side of the rotation direction of the pendulum 141. When the foundation pile tilts only slightly and the housing 121 stops rotating, the first pull rope 127 can be pulled. This improves the accuracy of the correction.

[0038] In this embodiment, the driving assembly includes a fixed column 142, a slider 143, and a rotating wheel 144. The fixed column 142 is disposed between the housing 121 and the mounting plate 152, and is coaxial with the foundation pile. The mounting plate 152 is connected to the housing 121 via the fixed column 142. The mounting plate 152 is rotatably connected to the fixed column 142 and slidably connected along the axial direction of the mounting plate 152. A groove 145 is formed at the end of the fixed column 142 away from the housing 121. A groove 145 is formed at the end of the mounting plate 152 near the fixed column 142. A cylinder 146 is provided on the surface of the cylinder 146, and a protrusion is provided on the circumference of the cylinder 146. The protrusion is slidably disposed in the groove 145. A fixing post 142 is slidably connected to the housing 121 through the cylinder 146. A base plate 147 is provided on the side of the fixing post 142 near the mounting plate 152. The base plate 147 is bolted to the fixing post 142, and the cylinder 146 passes through the base plate 147 and is slidably connected to the base plate 147. The protrusion of the cylinder 146 and the end face of the base plate 147 can abut against each other, thereby preventing the cylinder 146 from detaching from the groove 145.

[0039] A spiral groove 148 is provided on the circumferential surface of the fixed column 142. The slider 143 is slidably disposed in the spiral groove 148. The rotating wheel 144 is rotatably disposed on the slider 143 and rotates unidirectionally relative to the slider 143. The rotating wheel 144 is always in contact with the mounting plate 152. When the housing 121 and the mounting plate 152 move away from each other, the rotating wheel 144 can rotate relative to the slider 143. A fixed shaft 149 is provided on the slider 143. The fixed shaft 149 extends radially along the fixed column 142. A one-way bearing is sleeved on the fixed shaft 149. The rotating wheel 144 is sleeved on the one-way bearing. The rotating wheel 144 is connected to the slider 143 through the one-way bearing and the fixed shaft 149. After the foundation pile comes into contact with the ground, it has a large frictional force. When the housing 121 approaches the mounting plate 152, the rotating wheel 144 is in contact with the mounting plate 152 and the rotating wheel 144 is stationary relative to the slider 143. There is friction between the rotating wheel 144 and the mounting plate 152. Under the action of the spiral groove 148, the housing 121 rotates relative to the mounting plate 152.

[0040] As the housing 121 moves closer to the mounting plate 152, the slider 143 slides in the helical groove 148, and its rotation angle relative to the fixed column 142 is less than 90 degrees. After the pile tilts and the pendulum 141 rotates around its own axis of rotation, the center of gravity of the housing 121 and the fixed frame 101 is no longer on the extension line of the pile axis, and the center of gravity of the housing 121 and the fixed frame 101 tends to be below the pile axis. When the housing 121 moves away from the mounting plate 152, the contact pressure between the rotating wheel 144 and the mounting plate 152 decreases, and the center of gravity of the housing 121 and the fixed frame 101, under the influence of their gravity, returns to directly below the pile axis.

[0041] In this embodiment, the drive assembly further includes a second spring 150, which is disposed in the spiral groove 148 and is used to provide a thrust for the slider 143 to move closer to the mounting plate 152. The second spring 150 extends along the spiral direction of the spiral groove 148, and its two ends are respectively connected to the fixed post 142 and the slider 143. When the slider 143 moves away from the chassis 147 in the spiral groove 148, it compresses the second spring 150.

[0042] In this embodiment, the drive assembly further includes a second pull rope 151, which is sleeved inside the second spring 150. One end of the second pull rope 151 is connected to the slider 143, and the other end of the second pull rope 151 passes through the fixed post 142 and the housing 121 and is connected to the slide frame. A pull plate 155 is provided between the two connecting plates 126. A channel is provided on the fixed post 142 and the housing 121. The end of the second pull rope 151 away from the slider 143 passes through the channel and is connected to the pull plate 155. When the slide plate 125 slides in the housing 121, it can drive the second pull rope 151 to slide through the pull plate 155. The second pull rope 151 can pull the slider 143 to slide in the spiral groove 148 and away from the chassis 147. After the pile deviates, the resultant force generated by the rotation of the first rotating shaft 122 and the second rotating shaft 123, which causes the pile to settle, becomes two component forces. One component force causes the housing 121 to continue moving closer to the mounting plate 152, and the other component force causes the pile to swing in the opposite direction of its own tilt. During the correction process, the rotating wheel 144 separates from the mounting plate 152, and the housing 121 will not rotate relative to the mounting plate 152. The direction of the component force that causes the pile to straighten will not deviate, preventing the pile from tilting in other directions during the straightening process. Two sliders 143, rotating wheels 144, spiral grooves 148, second springs 150, and second pull ropes 151 are each provided, with one end of each second pull rope 151 connected to the pull plate 155. Each slider 143, rotating wheel 144, spiral groove 148, second spring 150, and second pull rope 151 forms a group, and the two groups are evenly arranged around the circumference of the fixed column 142, resulting in more even force distribution on the mounting plate 152 and smoother sliding relative to the fixed column 142.

[0043] Both the first pull rope 127 and the second pull rope 151 are steel wire ropes. The end of the first pull rope 127 away from the connecting plate 126 can be connected to a thicker soft rope for easy gripping by the operator.

[0044] In this embodiment, the fixing frame 101 is provided with a guide post 102, which extends along the axial direction of the foundation pile. The housing 121 is provided with an ear plate 103. The guide post 102 passes through the ear plate 103 and is slidably connected to the ear plate 103. The guide post 102 is provided with a baffle 104, which is located on the side of the ear plate 103 near the foundation pile. The guide post 102 is fitted with a third spring 105 and a fourth spring 106. The two ends of the third spring 105 are respectively connected to the baffle 104 and the ear plate 103. The two ends of the fourth spring 106 are respectively connected to the ear plate 103 and the fixing frame 101. The guide post 102 is threadedly connected to the fixing frame 101. The third spring 105 and the fourth spring 106 provide buffers for the sliding of the housing 121 relative to the fixing frame 101.

[0045] In this embodiment, a motor 130 is provided on the housing 121. The motor 130 is used to drive the first rotating shaft 122 to rotate. One end of the first rotating shaft 122 extends out of the housing 121. Both the end of the first rotating shaft 122 outside the housing 121 and the output shaft of the motor 130 are provided with pulleys. The two pulleys are driven by a belt. The first rotating shaft 122 and the second rotating shaft 123 are respectively fitted with gears of the same size. The two gears mesh. When the motor 130 drives the first rotating shaft 122 to rotate, the first rotating shaft 122 drives the second rotating shaft 123 to rotate through the gear on it and the gear on the second rotating shaft 123. The rotation directions of the first rotating shaft 122 and the second rotating shaft 123 are opposite, so that the eccentric blocks on the first rotating shaft 122 and the second rotating shaft 123 can generate a resultant force perpendicular to the line connecting the two.

[0046] The housing 121 is provided with a protective shell 111, and the pulley is located inside the protective shell 111.

[0047] In this embodiment, the gripper includes multiple clamping plates 153, each clamping plate 153 being rotatably connected to the mounting plate 152. The multiple clamping plates 153 are evenly distributed around the axis of the mounting plate 152. The mounting plate 152 is provided with multiple hydraulic rods 154, each hydraulic rod 154 corresponding to one clamping plate 153. One end of the hydraulic rod 154 is rotatably mounted on the mounting plate 152, and the other end is rotatably mounted on the clamping plate 153. The extension and retraction of the hydraulic rod 154 can drive the corresponding clamping plate 153 to rotate on the mounting plate 152. The simultaneous extension and retraction of multiple hydraulic rods 154 can cause the multiple clamping plates 153 to move closer or further apart, thereby clamping or releasing the foundation pile.

[0048] Specifically, the number of clamping plates 153 is greater than two, which can better clamp the foundation pile and prevent the foundation pile from deflecting relative to the mounting plate 152.

[0049] In this embodiment, the self-aligning pile driver also includes a loading mechanism for hoisting the fixed frame 101. The fixed frame is equipped with lifting lugs, which are rotatably connected to the fixed frame 101. The axis of the pile coincides with the rotation axis of the lifting lugs. The lifting lugs are connected to the loading mechanism via steel cables. The loading mechanism can be a movable crane, which moves the fixed frame 101 via steel cables, making it suitable for various applications.

[0050] The lifting lug includes a rotating column 107 and a U-shaped rod 108. The rotating column 107 is coaxial with the mounting plate 152, and one end of the rotating column 107 has a boss. The fixing frame 101 has a receiving groove 109 and a sealing plate 110, which seals the receiving groove 109. The sealing plate 110 is bolted to the fixing frame 101. The end of the rotating column 107 with the boss is rotatably positioned in the receiving groove 109 around its own axis. The other end of the rotating column 107 passes through the sealing plate 110 and is rotatably connected to it. The U-shaped rod 108 is inverted on the rotating column 107 and connected to it via a screw. The steel cable on the loading mechanism passes through the U-shaped rod 108, thereby lifting the fixing frame 101. When the housing 121 drives the fixing frame 101 to rotate, the fixing frame 101 will rotate relative to the rotating column 107, thereby preventing the steel cable from twisting and allowing the housing 121 to rotate more effectively.

[0051] The working principle of a self-aligning pile driver provided in the above embodiments is as follows:

[0052] First, the hydraulic rod 154 is activated to push the corresponding clamping plate 153 to clamp one end of the foundation pile. Then, the loading mechanism lifts the fixing frame 101, causing the foundation pile to detach from the ground. The foundation pile is then placed in a suitable position, with the end of the foundation pile away from the mounting plate 152 in contact with the ground. The motor 130 is then activated, and the motor 130 drives the first rotating shaft 122 to rotate via a belt. The rotation of the first rotating shaft 122 drives the second rotating shaft 123 to rotate via gears. The first rotating shaft 122 and the second rotating shaft 123 drive their respective eccentric blocks to rotate. The rotation of the eccentric blocks, through the first rotating shaft 122 and the second rotating shaft 123, causes the housing 121 to slide on the guide post 102. When the housing 121 approaches the foundation pile, the housing 121 drives the fixed column 142 to impact the mounting plate 152. The mounting plate 152 drives the foundation pile to move underground. At the same time, due to the action of the second spring 150, the rotating wheel 144 abuts against the mounting plate 152. The reduction in the distance between the housing 121 and the mounting plate 152 causes the rotating wheel 144 to drive the slider 143 to slide in the spiral groove 148. The rotating wheel 144 will not rotate under the action of the one-way bearing. Then, when the housing 121 approaches the mounting plate 152, it drives the fixed frame 101 to rotate relative to the mounting plate 152. The fixed frame 101 rotates relative to the rotating column 107. When the housing 121 moves away from the foundation pile, the housing 121 drives the fixed column 142 away from the mounting plate 152. The slider 143 slides in the spiral groove 148 under the action of the third spring 105. The slider 143 drives the rotating wheel 144 to rotate relative to the mounting plate 152. At this time, the rotating wheel 144 rolls on the mounting plate 152, and the housing 121 does not rotate relative to the mounting plate 152. At the same time, the movement of the housing 121 must overcome its own gravity. The distance that the housing 121 moves away from the mounting plate 152 is less than the distance that it moves closer to the mounting plate 152. The foundation pile as a whole shows a downward trend.

[0053] If the foundation pile tilts, the pendulum 141 will swing under the influence of gravity as the housing 121 rotates. At this time, the center of gravity of the housing 121 and the fixing frame 101 will shift and be below the axis of the foundation pile. When the housing 121 moves away from the mounting plate 152, due to the influence of the gravity of the pendulum 141, the rotating wheel 144 will slip on the mounting plate 152 and move in the opposite direction relative to the mounting plate 152. As the first rotating shaft 122 and the second rotating shaft 123 rotate, the housing 121 will swing back and forth. At this time, the operator can observe and pull the first pull rope 127 corresponding to the lower connecting plate 126 of the two connecting plates 126. The first pull rope 127 drives the sliding plate 125 to slide in the second direction through the connecting plate 126. The sliding plate 125 slides through the guide groove 129 and drives the second rotating shaft 123 to slide in the arc groove 124 and rotate around the first rotating shaft 122, compressing the corresponding first spring 128. At this time, the perpendicular line connecting the first rotating shaft 122 and the second rotating shaft 123 gradually extends in the same direction as the extension of the pile axis and continues to rotate. The resultant force generated by the eccentric blocks on the first rotating shaft 122 and the second rotating shaft 123 changes direction and generates two component forces. One component force still drives the shell 121 to move along the extension of the pile axis, while the other component force pushes the shell 121 to move in the opposite direction of the pile's tilt, so that the shell 121 drives the pile to gradually straighten.

[0054] While the connecting plate 126 slides, the connecting plate 126 drives the two second pull ropes 151 to move synchronously through the pull plate 155. The two pull ropes move away from the mounting plate 152 through the corresponding sliders 143. The sliders 143 drive the corresponding rotating wheels 144 to separate from the mounting plate 152. At this time, the housing 121 will not rotate relative to the mounting plate 152 when it moves. The operator can better control the distance that the first pull rope 127 pulls the slide plate 125 to move.

[0055] After pulling the first rope 127 for a certain period of time, observe the alignment of the foundation pile. Then, release the first rope 127. The compressed first spring 128 resets and drives the sliding plate 125 to reset via the connecting plate 126. The perpendicular line connecting the first rotating shaft 122 and the second rotating shaft 123 coincides with the axis of the foundation pile. The second spring 150 drives the slider 143 to reset. The rotating wheel 144 abuts against the mounting plate 152 again. Observe whether the housing 121 rotates normally. If it cannot rotate normally, continue to repeat the above actions to make the foundation pile continue to be aligned.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A pile driver with self-aligning function, characterized in that, include: The system comprises a fixed frame, a vibration mechanism, a clamping mechanism, and a detection mechanism. The fixed frame is rotatably mounted around the axis of the foundation pile. The vibration mechanism includes a housing, a first rotating shaft, a second rotating shaft, and an adjustment assembly. The housing is slidably mounted on the fixed frame. The first and second rotating shafts are rotatably mounted on the housing, with the second rotating shaft rotating around the first rotating shaft on the housing. The first and second rotating shafts are parallel and extend along a first direction perpendicular to the direction of the foundation pile axis. A gap is provided between the first and second rotating shafts, and eccentric blocks are respectively provided on the first and second rotating shafts. When the first and second rotating shafts rotate, they generate a resultant force perpendicular to the line connecting them, driving the housing to rotate within the fixed frame. The frame slides on the ground; the adjustment assembly is used to drive the second rotating shaft to rotate around the first rotating shaft; the clamping mechanism includes a mounting plate and a gripper, the mounting plate is slidably disposed on the housing, the mounting plate is rotatably connected to the housing, and the gripper is used to clamp the foundation pile; the detection mechanism includes a pendulum and a drive assembly, the pendulum is rotatably disposed on the fixed frame, the rotation axis of the pendulum extends along the first direction, the center of gravity of the pendulum is located below its rotation axis, the axis of the foundation pile coincides with the rotation axis of the mounting plate and the extension line passes through the rotation axis of the pendulum, the fixed frame, the housing, the mounting plate and the foundation pile are arranged sequentially along the axial direction of the foundation pile; the drive assembly is used to drive the housing to rotate when the center of gravity of the pendulum is located on the axis of the foundation pile; The adjustment assembly includes a sliding frame and a power component. The housing has an arc groove coaxial with the first rotating shaft, and the second rotating shaft is slidably disposed within the arc groove. The sliding frame is slidably disposed within the housing along a second direction, which is perpendicular to both the first direction and the extension direction of the pile axis. The sliding frame has a guide groove, and the second rotating shaft is slidably disposed within the guide groove along the second direction. The guide groove is inclined in the second direction and gradually moves away from the mounting plate from the side closest to the first rotating shaft to the side closest to the second rotating shaft. The power component drives the sliding frame to slide within the housing. The drive assembly includes a fixed column, a slider, and a rotating wheel. The fixed column is disposed between the housing and the mounting plate, and the mounting plate is connected to the housing via the fixed column. The mounting plate and the fixed column are rotatably connected and slidably connected along the axial direction of the mounting plate. The fixed column has a helical groove on its circumference, and the slider is slidably disposed within the helical groove. The rotating wheel is rotatably disposed on the slider and rotates unidirectionally relative to the slider, always in contact with the mounting plate. When the housing and the mounting plate move away from each other, the rotating wheel can rotate relative to the slider. The housing is equipped with a motor, which drives the first rotating shaft to rotate. The first and second rotating shafts are respectively fitted with gears of the same size, and the two gears mesh.

2. A pile driver with self-aligning function according to claim 1, characterized in that, When the foundation pile is vertical, the center of gravity of the pendulum is located on the axis of the foundation pile and can rotate bidirectionally around its own axis of rotation. The first and second rotating axes are located on the same horizontal plane. The second rotating axis is spaced apart from the two ends of the guide groove and the arc groove extension direction, respectively. There are two power components, which are located on both sides of the slide frame in the second direction.

3. A pile driver with self-aligning function according to claim 1, characterized in that, The drive assembly also includes a second spring disposed in a helical groove for providing a thrust to the slider toward the mounting plate.

4. A pile driver with self-aligning function according to claim 3, characterized in that, The drive assembly also includes a second pull rope, which is sleeved inside the second spring. One end of the second pull rope is connected to the slider, and the other end of the second pull rope passes through the fixed post and the housing and is connected to the slide frame.

5. A pile driver with self-aligning function according to claim 1, characterized in that, The fixed frame is equipped with a guide post that extends along the axial direction of the foundation pile. The shell is equipped with an ear plate, through which the guide post passes and is slidably connected. The guide post is equipped with a baffle located on the side of the ear plate closer to the foundation pile. A third spring and a fourth spring are sleeved on the guide post. The two ends of the third spring are connected to the baffle and the ear plate respectively, and the two ends of the fourth spring are connected to the ear plate and the fixed frame respectively.

6. A pile driver with self-aligning function according to claim 1, characterized in that, The gripper includes multiple clamping plates, each of which is rotatably connected to the mounting plate. The multiple clamping plates are evenly distributed around the axis of the mounting plate. The mounting plate is provided with multiple hydraulic rods, each hydraulic rod corresponding to one clamping plate. One end of the hydraulic rod is rotatably mounted on the mounting plate, and the other end is rotatably mounted on the clamping plate.

7. A pile driver with self-aligning function according to claim 1, characterized in that, It also includes a loading mechanism for hoisting the fixed frame. The fixed frame is equipped with lifting lugs, which are rotatably connected to the fixed frame. The axis of the foundation pile coincides with the rotation axis of the lifting lugs, and the lifting lugs are connected to the loading mechanism via steel cables.

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