Wheeled hydraulic pile driver and pile driving method

Abstract

The present invention discloses a wheeled hydraulic pile driver and a pile driving method, and relates to the technical field of pile driving equipment. The wheeled hydraulic pile driver includes a vehicle body, a pile frame, and a hydraulic hammer, wherein the pile frame is mounted on the vehicle body, and the hydraulic hammer is slidably mounted on the pile frame. The wheeled hydraulic pile driver also includes: a column, wherein the column is rotatably mounted on the vehicle body and is located on one side of the pile frame; a scissor assembly, wherein the scissor assembly is mounted on the column, and the scissor assembly can shrink or expand along the axial direction of the column; and a hydraulic clamp, wherein a plurality of hydraulic clamps are provided, and the plurality of hydraulic clamps are fixed to the scissor assembly at equal intervals, and are used to clamp the pile body at multiple points. By providing a scissor assembly, fixing the plurality of hydraulic clamps to the scissor assembly, and providing a pad that can contact the pile body and the scissor assembly at the same time, when piling, the scissor assembly can shrink as the pile body is driven in, and drive the plurality of hydraulic clamps to approach the bottom of the scissor assembly, and can continuously guide the pile body.

Description

Technical Field

[0001] The present invention relates to the technical field of piling equipment, in particular to a wheeled hydraulic pile driver and a piling method. Background Art

[0002] During the guardrail piling process, the pile body needs to be placed in the designated piling position in advance, which is labor-intensive, time-consuming and labor-intensive, and is very close to the working area, so the safety factor is low.

[0003] In the patent with application number CN202311655264.6, a municipal road guardrail pile driver is proposed. The pile driver can load multiple guardrail steel pipes at one time by setting up a hopper, and then use the walking mechanism to move to the piling point, and use the clamping mechanism to move the steel pipe horizontally to the working path of the hydraulic hammer, reducing the number of manual movements.

[0004] However, when the device is in use, the clamping mechanism plays a role of grasping and guiding. Since the height of the clamping mechanism is in a fixed state, when the pile is driven into a deep depth, the clamping mechanism will be unable to guide the pile, resulting in an inclined driving angle of the pile. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a wheeled hydraulic pile driver and a pile driving method, which solve the problems raised in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wheeled hydraulic pile driver, comprising a body, a pile frame and a hydraulic hammer, wherein the pile frame is mounted on the body, and the hydraulic hammer is slidably mounted on the pile frame, and further comprising: a column, wherein the column is rotatably mounted on the body and is located on one side of the pile frame; a scissors assembly, wherein the scissors assembly is mounted on the column, and the scissors assembly can be retracted or expanded along the axial direction of the column; a hydraulic clamping jaw, wherein the hydraulic clamping jaws are provided with a plurality of hydraulic clamping jaws, and the plurality of hydraulic clamping jaws are fixed on the scissors assembly at equal intervals for clamping the pile body at multiple points; an elastic component, wherein the elastic component is provided on the scissors assembly, and the elastic component enables the scissors assembly to be in an expanded state when not subjected to external force; a pad, wherein the pad is slidably mounted on the column, and when piling, part of the pad contacts the top of the scissors assembly, and the other part contacts the top of the pile body, so that the scissors assembly contracts as the pile body descends.

[0007] Furthermore, the scissors-type assembly includes a cross bar, and there are multiple cross bars. The multiple cross bars are slidably installed on the column, and the hydraulic clamps are fixedly installed on the side of the cross bar; two fork rods are hinged between two adjacent cross bars, and the two fork rods are arranged in an X shape, and one hinge point of a single fork rod is fixed on the cross bar, and the other hinge point is slidably provided on the cross bar; the cross bar located at the bottom end of the scissors-type assembly is fixedly connected to the column.

[0008] Furthermore, a roller is rotatably provided on the jaws of the hydraulic clamp, and when the hydraulic clamp clamps the pile body, the roller can contact the surface of the pile body; the rotation axis of the roller is perpendicular to the moving direction of the hydraulic clamp; and the material of the roller is flexible.

[0009] Furthermore, an upper fixed plate is fixed on the upper side of the column, and a lower fixed plate is fixed on the lower side of the column, and a transverse rod and a first screw are respectively installed between the upper fixed plate and the lower fixed plate in the vertical direction; a second slide is fixed on one side of the transverse rod, and the second slide is slidably sleeved on the outer peripheral surface of the first screw; the outer peripheral surface of the transverse rod is slidably sleeved with a first slide, and the first slide and the transverse rod are connected by an elastic component.

[0010] Furthermore, a slide is provided in the side of the cross bar close to the transverse rod, and the upper side, the lower side and the side close to the transverse rod of the slide are all open. An insertion cavity is also provided in the cross bar, and the insertion cavity is located on the side of the slide away from the transverse rod; the elastic component includes: an insertion rod, the insertion rod is slidably arranged in the insertion cavity, and one end of the insertion rod is fixedly connected to the first slide cylinder; a slide, the slide is slidably arranged in the slide, one end of the fork rod is hinged to the slide, and the slide is slidably connected to the insertion rod; a spring, the spring is sleeved on the outer circumference of the insertion rod, and one end of the spring is in contact with the slide, and the other end is in contact with the first slide cylinder.

[0011] Furthermore, the first screw is limited to rotating along its own axis, and a bevel gear set is fixed to the end of the first screw; the transverse rod is limited to sliding along the length direction of the transverse rod; a second screw is rotatably mounted on the upper fixed plate, and the second screw is limited to moving along its own axial direction, and the axis of the second screw is perpendicular to the axis of the upper fixed plate, and one end of the second screw is connected to the transverse rod; a second nut is provided on the outer peripheral surface of the second screw, and the second nut is threadedly connected to the second screw, and the bevel gear set can drive the second nut to rotate to move the second screw.

[0012] Furthermore, a first nut is sleeved on the outer circumference of the first screw, the first nut is threadedly connected to the first screw, and the first nut is fixed to the pad; a clutch assembly is provided between the second nut and the bevel gear group, and when the clutch assembly is in a first state, the bevel gear group drives the second nut to rotate in a first direction; when the clutch assembly is in a second state, the bevel gear group drives the second nut to rotate in a second direction, and the second direction is opposite to the first direction; when the clutch assembly is in a third state, the second nut does not rotate when the bevel gear group rotates.

[0013] Furthermore, a first electromagnet is provided in the pad, and a second electromagnet is provided in the hammer head of the hydraulic hammer, and the first electromagnet and the second electromagnet attract each other when energized.

[0014] Furthermore, a pile delivery assembly is provided on one side of the column, and the pile delivery assembly includes: a baffle, which is fixed to the vehicle body, the baffle is runway-shaped, and one side of the baffle is an open end; a rotating belt, the rotating belt is provided on the inner side of the baffle, and there is a certain distance between the outer wall of the rotating belt and the inner wall of the baffle; an isolation rod, a plurality of isolation rods are provided, and the plurality of isolation rods are fixed on the rotating belt at equal intervals, and piles are vertically placed between adjacent isolation rods, and the hydraulic clamp can take piles from the open end of the baffle.

[0015] The present invention also provides a piling method for a wheeled hydraulic pile driver, which is applicable to the above-mentioned wheeled hydraulic pile driver and comprises the following steps:

[0016] Step 1: Start preparation work, place the pile body in the pile delivery assembly, adjust the height of the scissor assembly and the pad according to the height of the pile body, and lift the hydraulic hammer above the pad;

[0017] Step 2: Start taking the pile, rotate the column until the hydraulic clamp is located on one side of the pile delivery assembly, and clamp a pile body from the pile delivery assembly;

[0018] Step 3: Rotate the column in the opposite direction until the hydraulic clamp is located below the hydraulic hammer, so that the pile body is directly below the hydraulic hammer;

[0019] Step 4: Adjust the clutch assembly to the third state, lower the hydraulic hammer until it contacts the pad, and then continue to lower it until the pad contacts the top of the pile body. Then adjust the clutch assembly to the first state, and lower the hydraulic hammer again until the bottom of the pile body contacts the ground.

[0020] Step 5: Start the hydraulic hammer to start piling, and adjust the height of the hydraulic hammer according to the driving depth until the piling is completed;

[0021] Step 6: Turn off the hydraulic hammer, adjust the bottom end of the hydraulic hammer to contact the pad, adjust the clutch assembly to the second state, and energize the first electromagnet and the second electromagnet;

[0022] Step 7: Lift the hydraulic hammer, de-energize the first electromagnet and the second electromagnet when the scissor assembly is reset, and continue to lift the hydraulic hammer to the initial height;

[0023] Step 8: Repeat steps 2 to 7 to complete the piling operation of multiple piles in sequence.

[0024] The present invention has the following beneficial effects:

[0025] (1) The wheeled hydraulic pile driver is provided with a scissor assembly, and a plurality of hydraulic clamps are fixed to the scissor assembly, and a pad is provided which can contact the pile body and the scissor assembly at the same time. When piling, the scissor assembly can shrink as the pile body is driven in, and drive the plurality of hydraulic clamps to approach the bottom of the scissor assembly, which can continuously guide the pile body.

[0026] (2) The wheeled hydraulic pile driver is provided with a first screw, a second screw and a clutch assembly. By switching the working state of the clutch assembly, the hydraulic hammer can drive the scissor assembly to retract when it descends, and can drive the scissor assembly to expand when it ascends, which is convenient for use.

[0027] (3) The wheeled hydraulic pile driver is provided with an elastic component and a transverse rod. When the spring is compressed, the second screw can drive the transverse rod to move along the guide groove to increase the distance between the first slide cylinder and the transverse rod, thereby enabling the spring and the slide to move toward the first slide cylinder together, thereby reducing the compression amount of the spring and avoiding the scissor assembly from being blocked from contraction.

[0028] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a schematic top view of the overall structure of the present invention;

[0031] Figure 3 This is a diagram showing the coordination relationship between the column, the scissor assembly, and the hydraulic clamping jaws of the present invention;

[0032] Figure 4 It is a front view of the matching relationship between the column, the scissor assembly and the hydraulic clamping claw of the present invention;

[0033] Figure 5 A top view of the coordination relationship between the column, the scissor assembly and the hydraulic clamping jaws of the present invention;

[0034] Figure 6 This is a schematic diagram of the installation of the hydraulic clamp and crossbar of the present invention;

[0035] Figure 7 This is a schematic diagram of the internal structure of the crossbar of the present invention;

[0036] Figure 8 A diagram showing the matching relationship between the clutch assembly, the bevel gear, and the second screw of the present invention;

[0037] Figure 9 This is a schematic diagram of the cooperation structure between the second screw and the second nut of the present invention;

[0038] Figure 10 A top view of the clutch assembly of the present invention;

[0039] Figure 11 This is a diagram showing the matching relationship between the first screw and the first nut of the present invention;

[0040] Figure 12 This is a schematic structural diagram of the first wheel assembly of the present invention;

[0041] Figure 13 This is a structural diagram of the pile delivery assembly of the present invention;

[0042] Figure 14 For the present invention Figure 2 Enlarged schematic diagram of area A in the middle.

[0043] In the figure, 1, vehicle body; 2, carriage; 3, pile frame; 4, hydraulic hammer; 5, pad; 6, slide rod; 7, buffer sleeve; 8, column; 9, guide rail; 10, upper fixed plate; 11, lower fixed plate; 12, bottom plate; 13, slewing bearing; 14, cross bar; 141, slideway; 142, insert cavity; 15, fork rod; 16, spring; 17, first slide; 18, second slide; 19, hydraulic clamp; 191, roller; 20, fixing member; 21, first connecting member; 22, second connecting member; 23, balancing block; 231, slideway; 24, first screw; 25, first nut; 26, traverse rod; 27, baffle; 28, guide plate; 29, slewing belt; 30. Isolation rod; 31. First fixed rod; 32. Sinking part; 33. Slide; 34. Driving wheel; 35. Guide block; 37. Support platform; 38. Second screw; 381. Axial groove; 39. Tooth; 40. Second nut; 41. Mounting frame; 42. Bevel gear set; 43. First shaft; 44. Adjusting gear; 45. Fork; 46. Adjusting cylinder; 47. Second shaft; 48. First wheel set; 49. Second wheel set; 50. Spacer; 51. Transmission gear; 52. Ring gear; 53. Pile body; 56. Second fixed rod; 57. Guide groove; 58. Positioning member; 59. Slide; 60. Insert rod; 61. Gear part; 62. Ratchet assembly. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0046] The following is based on Figures 1-14 The present invention describes a wheeled hydraulic pile driver and a pile driving method provided by embodiments of the present invention.

[0047] See also Figures 1-6 The embodiment of the present invention provides a technical solution: including a vehicle body 1, a pile frame 3 and a hydraulic hammer 4. In the prior art, the pile frame 3 is vertically installed on one side of the vehicle body 1, and the hydraulic hammer 4 is slidably installed on the pile frame 3. A slide 2 is also provided on the vehicle body 1, and one end of the slide 2 is hinged to the hydraulic hammer 4. The slide 2 is used to control the height of the hydraulic hammer 4 on the pile frame 3.

[0048] The wheeled hydraulic pile driver in this embodiment further comprises a column 8, which is rotatably mounted on the vehicle body 1 and is located on one side of the pile frame 3. The rotation axis of the column 8 is arranged vertically. A scissor assembly is also mounted on the column 8, which can be retracted or expanded along the axial direction of the column 8.

[0049] Furthermore, the scissor assembly includes a plurality of hydraulic clamps 19, which are fixed at equal intervals on the scissor assembly and are used to clamp the pile body 53 at multiple points. After the hydraulic clamps 19 clamp the pile body 53, the pile body 53 can be moved directly under the hydraulic hammer 4 by rotating the column 8. Furthermore, the scissor assembly is also provided with an elastic component that can apply an elastic supporting force to the scissor assembly, so that the scissor assembly is in an open state when no external force is applied, preventing the scissor assembly from contracting when no external force is applied. This increases the clamping range of the plurality of hydraulic clamps 19 on the pile body 53 in the initial state, keeps the pile body 53 in a vertical state, and improves the clamping stability. In addition, a pad 5 is slidably installed on the column 8. When piling, the hydraulic hammer 4 first contacts the pad 5 and presses the pad 5 down to the top of the pile body 53. At this time, part of the pad 5 contacts the top of the scissor assembly, and the other part contacts the top of the pile body 53, so that the scissor assembly contracts as the pile body 53 descends. When the hydraulic hammer 4 starts piling, the highest point of the pile body 53 drops, and the pad 5 falls synchronously with the pile body 53, driving the scissor assembly to contract. Correspondingly, multiple hydraulic clamps 19 also begin to approach each other and fall as the scissor assembly contracts, continuously clamping the pile body 53 to prevent the pile body 53 from falling and breaking away from the support of the hydraulic clamp 19, causing the pile body 53 to fail to maintain a vertical state.

[0050] See Figure 3-Figure 6The scissor-fork assembly includes a cross bar 14, and the cross bar 14 is provided with multiple cross bars 14. Multiple cross bars 14 are slidably mounted on the column 8, and the hydraulic clamps 19 are fixedly mounted on the side of the cross bar 14. In addition, two adjacent cross bars 14 are hinged with two fork rods 15, and the two fork rods 15 are arranged in an X shape. One hinge point of a single fork rod 15 is fixed on the cross bar 14, and the other hinge point is slidably provided on the cross bar 14. When the scissor-fork assembly is retracted or expanded, the other hinge point slides relative to the cross bar 14. Preferably, the cross bar 14 at the bottom end of the scissor-fork assembly is fixedly connected to the column 8, so that the lowest point of the scissor-fork assembly remains unchanged, and the multiple hydraulic clamps 19 all move closer to the lowest point when the scissor-fork assembly is retracted.

[0051] Specifically, a second connecting member 22 is fixed on one side of the crossbar 14, a balancing block 23 is fixed on the second connecting member 22, a slide groove 231 is opened on the balancing block 23, and a guide rail 9 is fixed on both sides of the column 8. Preferably, the guide rail 9 is T-shaped, and the slide groove 231 fits with the guide rail 9 and can slide along the guide rail 9. In addition, a first connecting member 21 is fixed on the other side of the crossbar 14, and a fixing member 20 is fixed on one side of the first connecting member 21. The hydraulic clamp 19 is installed on the fixing member 20, and multiple hydraulic clamps 19 are equidistantly installed on different crossbars 14 on the scissor assembly. Figure 3 There are three installed in the middle, so that the hydraulic clamping claw 19 and the scissor fork assembly can move in the vertical direction of the column 8.

[0052] In order to ensure that the hydraulic clamp 19 does not restrict the movement of the pile body 53 in the vertical direction when clamping the pile body 53, a roller 191 is rotatably provided on the clamping jaws of the hydraulic clamp 19. Preferably, four rollers 191 are provided, which are installed in groups of two on the two jaws of the hydraulic clamp 19. When the hydraulic clamp 19 clamps the pile body 53, the roller 191 can contact the surface of the pile body 53, and the rotation axis of the roller 191 is perpendicular to the moving direction of the hydraulic clamp 19. The material of the roller 191 is flexible, such as rubber, flexible ABS, etc. The roller 191 can clamp the pile body 53 by friction. When the pile body 53 is impacted by the hydraulic hammer 4, it can also drive the roller 191 to rotate, thereby causing it to fall in the vertical direction.

[0053] See Figure 3 、 Figure 4 and Figure 6An upper fixed plate 10 is fixed on the upper side of the column 8, and a lower fixed plate 11 is fixed on the lower side of the column 8. A transverse rod 26 and a first screw 24 are respectively installed between the upper fixed plate 10 and the lower fixed plate 11 in the vertical direction. A second slide 18 is fixed on one side of the transverse rod 14. The second slide 18 is slidably sleeved on the outer peripheral surface of the first screw 24. A first slide 17 is slidably sleeved on the outer peripheral surface of the transverse rod 26. The first slide 17 and the transverse rod 14 are connected by an elastic component. When the scissors assembly slides along the column 8, the first slide 17 and the second slide 18 also slide on the outer peripheral surfaces of the transverse rod 26 and the first screw 24, respectively.

[0054] It should be noted that, combined with Figure 1 and Figure 3 In order to drive the column 8 to rotate, a slewing bearing 13 can be installed on the upper side of the vehicle body 1, and a base plate 12 can be fixed on the slewing bearing 13. At the same time, the column 8 and the base plate 12 are fixed. In order to improve stability, a second fixing rod 56 can be fixed between the upper fixing plate 10 and the base plate 12 to improve the connection strength. A slewing drive device is installed at the bottom of the vehicle body 1. The axis of the output end of the device passes through the vehicle body 1 and the axis of the column 8 and is fixed, thereby driving the column 8 to rotate. The slewing drive device here can be a cylinder or a motor.

[0055] See Figure 5 、 Figure 6 and Figure 7 A slide 141 is provided in the side of the cross bar 14 close to the transverse rod 26. The upper side, the lower side and the side close to the transverse rod 26 of the slide 141 are all open. An insertion cavity 142 is also provided in the cross bar 14. Preferably, the insertion cavity 142 is cylindrical and is located on the side of the slide 141 away from the transverse rod 26.

[0056] And, combined with Figure 7 The above-mentioned elastic component includes an insert rod 60, which is slidably arranged in the insert cavity 142, and one end of the insert rod 60 is fixed to the first slide cylinder 17. A slide 59 is also provided in the slide 141, and one end of the fork rod 15 is hinged to the slide 59. The slide 59 here can be provided with two hinge points, which are respectively located on the upper and lower sides of the slide 141, so that the fork rods 15 on both sides of the single cross bar 14 can be hinged to the slide 59, and the slide 59 is slidably connected to the insert rod 60, and the insert rod 60 passes through the slide 59, and the movements of the two do not interfere with each other. A spring 16 is sleeved on the outer circumference of the insert rod 60, and one end of the spring 16 is in contact with the slide 59, and the other end is in contact with the first slide cylinder 17. The spring 16 always exerts a thrust on the slide 59 to prevent the slide 59 from moving to the side close to the transverse rod 26, so that the scissors assembly remains in an open state when it is not subjected to external force.

[0057] See Figure 4 、 Figure 5 and Figure 8 When the scissors-fork assembly contracts, the fork rod 15 will push the slide 59 closer to the first slide cylinder 17, which will compress the spring 16, causing the reaction force of the spring 16 on the slide 59 to increase, thereby increasing the resistance encountered by the scissors-fork assembly when it contracts, affecting its use.

[0058] In order to solve this problem, the first screw 24 is limited to rotate along its own axis. Specifically, the two ends of the first screw 24 are rotatably mounted on the upper fixed plate 10 and the lower fixed plate 11 respectively. A bevel gear set 42 is fixed at the end of the first screw 24. The bevel gear set 42 consists of two bevel gears that mesh with each other, and the axis of one of the bevel gears is fixedly connected to the axis of the first screw 24.

[0059] In addition, combined Figure 8 The transverse rod 26 is limited to sliding along the length direction of the transverse rod 14. Specifically, a guide groove 57 is provided on the upper fixed plate 10 and the lower fixed plate 11. The direction of the guide groove 57 is parallel to the axial direction of the insertion rod 60. The two ends of the transverse rod 26 are respectively located in the guide groove 57. A locking member 58 is fixed on the transverse rod 26. The length of the locking member 58 is greater than the width of the guide groove 57. The locking member 58 is used to prevent the transverse rod 26 from moving along its own axial direction.

[0060] In addition, a second screw 38 is rotatably mounted on the upper fixed plate 10. The second screw 38 is limited to move along its own axial direction, and the axis of the second screw 38 is perpendicular to the axis of the upper fixed plate 10. One end of the second screw 38 is connected to the transverse rod 26, and a second nut 40 is provided on the outer peripheral surface of the second screw 38. The second nut 40 is threadedly connected to the second screw 38, and the bevel gear set 42 can drive the second nut 40 to rotate to move the second screw 38.

[0061] Specific, combined Figure 9 A support platform 37 is fixed on the upper fixed plate 10, and one end of the second nut 40 is rotatably installed in the support platform 37. An axial groove 381 is provided on the outer surface of the second screw 38. Correspondingly, a protruding tooth 39 is fixed on the support platform 37. The protruding tooth 39 fits in the axial groove 381 to limit the circumferential movement of the second screw 38, so that the second nut 40 can drive the second screw 38 to move along its own axial direction when rotating.

[0062] When the spring 16 is compressed, the second screw 38 can drive the transverse rod 26 to move along the guide groove 57 to increase the distance between the first slide 17 and the cross bar 14, so that the spring 16 and the slide 59 can move toward the first slide 17 together, thereby reducing the compression amount of the spring 16 and avoiding obstruction of the contraction of the scissors assembly.

[0063] In this embodiment, two second screws 38 can be provided, one located at the top of the transverse rod 26 and the other located at the bottom of the transverse rod 26, thereby applying a force to both ends of the transverse rod 26 so that the transverse rod 26 is subjected to a balanced force. Accordingly, two groups of structures cooperating with the second screws 38 also need to be provided.

[0064] See Figure 3 、 Figure 4 as well as Figure 10-12 A first nut 25 is sleeved on the outer circumference of the first screw 24, the first nut 25 is threadedly connected to the first screw 24, and the first nut 25 is fixed to the pad 5. Specifically, one side of the pad 5 is fixed on the sliding rod 6, and the sliding rod 6 is slidingly connected to the column 8. Preferably, the connection method between the sliding rod 6 and the column 8 is the same as the connection method between the hydraulic clamp 19 and the column 8, and the first nut 25 is fixedly installed on the sliding rod 6. When the pad 5 moves in the vertical direction, the first screw 24 can be driven to rotate by the first nut 25, thereby driving the bevel gear set 42 to rotate. The contact part between the pad 5 and the scissors assembly is preferably the first nut 25 and the second slide cylinder 18. In order to reduce the impact between the two, a buffer sleeve 7 can be fixed below the first nut 25.

[0065] In addition, a clutch assembly is provided between the second nut 40 and the bevel gear set 42. When the clutch assembly is in the first state, the bevel gear set 42 drives the second nut 40 to rotate in a first direction. When the clutch assembly is in the second state, the bevel gear set 42 drives the second nut 40 to rotate in a second direction, which is opposite to the first direction. When the clutch assembly is in the third state, the second nut 40 does not rotate when the bevel gear set 42 rotates.

[0066] Thus, it is possible to achieve the following: putting the clutch assembly in the first state, when the pad 5 moves downward, the scissors-fork assembly is driven to contract, and at the same time, the second nut 40 and the second screw 38 can drive the transverse rod 26 to move to the side away from the cross bar 14, thereby reducing the resistance of the spring 16 to the contraction of the scissors-fork assembly; putting the clutch assembly in the second state, when the pad 5 moves upward, the scissors-fork assembly is driven to expand, and at the same time, the second nut 40 and the second screw 38 can drive the transverse rod 26 to move to the side close to the cross bar 14, thereby making the spring 16 provide the scissors-fork assembly with elastic force to maintain the expanded state for next use; when the clutch assembly is in the third state, it can be used to adjust the height of the scissors-fork assembly and the position of the transverse rod 26.

[0067] Combine Figure 9 、 Figure 10 and Figure 12 , a specific implementation of a clutch assembly is given below. Of course, the functions of the above clutch assembly can also be achieved by other means:

[0068] A mounting bracket 41 is fixed on the upper fixed plate 10, and a first shaft 43 and a second shaft 47 are rotatably mounted on the mounting bracket 41. One end of the first shaft 43 is fixedly connected to the axis of another bevel gear of the bevel gear set 42. An adjusting gear 44 is slidably provided on the first shaft 43. The adjusting gear 44 can slide along the axis of the first shaft 43 and can also rotate with the first shaft 43. A shift fork 45 is rotatably provided on one side of the adjusting gear 44. One side of the shift fork 45 is fixedly connected to the adjusting cylinder 46. The adjusting cylinder 46 can drive the shift fork 45 to move along the axial direction of the first shaft, thereby adjusting the position of the adjusting gear 44.

[0069] In addition, a first wheel set 48 and a second wheel set 49 are fixed to the second shaft 47, respectively. There is a spacer 50 between the first wheel set 48 and the second wheel set 49. The width of the spacer 50 is greater than the tooth width of the adjusting gear 44. When the adjusting gear 44 is engaged with the first wheel set 48, the clutch assembly is in the first state. When the adjusting gear 44 is engaged with the second wheel set 49, the clutch assembly is in the second state. When the adjusting gear 44 is in the empty area, the clutch assembly is in the third state.

[0070] The first wheel group 48 consists of a gear portion 61 and a ratchet assembly 62. The gear portion 61 is rotatably mounted on the outer periphery of the axis of the ratchet assembly 62. The axis of the ratchet assembly 62 is fixedly connected to the second shaft 47, so that the driving gear 44 can only drive the first wheel group 48 in one direction. The structure of the second wheel group 49 is the same as that of the first wheel group 48, but the direction of rotation is restricted differently, thereby preventing the hydraulic hammer 4 from driving the second screw 38 to move back and forth due to the large-scale vibration of the pad 5 during the piling process.

[0071] In addition, a transmission gear 51 is fixedly provided on one side of the second shaft 47 . Accordingly, a ring gear 52 is fixedly provided on the outer circumference of the second nut 40 . The ring gear 52 is engaged with the transmission gear 51 , so that the transmission gear 51 can drive the ring gear 52 to rotate.

[0072] In order to facilitate the control of the upward movement of the pad 5, a first electromagnet is provided in the pad 5, and a second electromagnet is provided in the hammer head of the hydraulic hammer 4. The first electromagnet and the second electromagnet attract each other when energized. When the piling is completed, the first electromagnet and the second electromagnet are energized, thereby driving the pad 5 to move synchronously through the upward movement of the hydraulic hammer 4.

[0073] See Figure 1 、 Figure 2 、 Figure 13 and Figure 14A pile delivery assembly is provided on one side of the column 8. The pile delivery assembly is used to temporarily store the pile body 53 and also facilitates the hydraulic clamp 19 to take the pile. The pile delivery assembly includes a baffle 27. The baffle 27 is fixed to the vehicle body 1 through a first fixing rod 31. The baffle 27 is runway-shaped, and one side of the baffle 27 is an open end, which is close to the column 8. A rotating belt 29 is provided on the inner side of the baffle 27, and there is a certain distance between the outer wall of the rotating belt 29 and the inner wall of the baffle 27. This distance is slightly larger than the diameter of the pile body 53, so that the pile body 53 can move in the gap between the two. The rotating belt 29 is driven by a driving wheel 34, and the driving wheel 34 is rotatably mounted on the vehicle body 1. A rotation drive device is also provided on the vehicle body 1. The rotation drive device can be a driving motor or a hydraulic motor. The axis of the output end of the rotation drive device is fixedly connected to the axis of the driving wheel 34.

[0074] Preferably, two groups of baffles 27 and rotary belts 29 are provided in the vertical direction to prevent the pile body 53 from tipping over in the pile driving assembly.

[0075] In addition, a plurality of isolation rods 30 are fixedly provided on the rotary belt 29. The plurality of isolation rods 30 are arranged at equal intervals, and the pile body 53 is vertically placed between adjacent isolation rods 30. When a pile needs to be removed, the column 8 is driven to rotate, driving the hydraulic clamp 19 to rotate to the open end of the baffle 27, and the pile can be removed from the open end of the baffle 27.

[0076] The support 32 is provided with a guide plate 28 on the side of the baffle 27 so as to facilitate the removal of piles.

[0077] When it is necessary to add piles 53 to the pile delivery assembly, the piles 53 to be added can be placed at the open end of the baffle 27 and away from the side of the guide plate 28 , then placed between two adjacent isolation rods 30 , and pushed into the gap between the rotary belt 29 and the baffle 27 .

[0078] During use (working), the column 8 is first driven to rotate, so that the hydraulic clamp 19 moves to the top of the sinking part 32 and opens, and then the rotary belt 29 is driven to rotate to transport a pile body 53 to the sinking part 32, and then the hydraulic clamp 19 is clamped, and then the column 8 is driven to rotate to the bottom of the hydraulic hammer 4, and the clutch assembly is adjusted to the third state, and then the hydraulic hammer 4 is driven to fall and push the pad 5 to contact the top of the pile body 53, and the clutch assembly is adjusted to the first state, and then the hydraulic hammer 4 is continued to be driven to fall until the bottom of the pile body 53 contacts the ground, and then the piling operation is started. During the piling process, the pad 5 moves downward as the top of the pile body 53 falls, and at the same time drives the first screw 24 to rotate, thereby driving the second screw 38 to drive the transverse rod 26 to move to the side away from the cross bar 14, and the scissors assembly contracts and drives the hydraulic clamp 19 to approach the bottom end.

[0079] After the piling is completed, the bottom end of the hydraulic hammer 4 is brought into contact with the pad 5, and the first electromagnet and the second electromagnet are energized. Then, the hydraulic hammer 4 is driven to move upward, driving the pad 5 to move upward, and at the same time driving the first screw 24 to rotate, thereby driving the second screw 38 to drive the transverse rod 26 to move to the side close to the cross bar 14, and the scissor assembly is opened and reset. After that, the first electromagnet and the second electromagnet are de-energized to facilitate the next piling.

[0080] The present invention also provides a piling method for a wheeled hydraulic pile driver, which is applicable to the above-mentioned wheeled hydraulic pile driver and comprises the following steps:

[0081] Step 1: Start preparation work, place the pile body 53 in the pile delivery assembly, adjust the height of the scissor assembly and the pad 5 according to the height of the pile body 53, and at the same time lift the hydraulic hammer 4 to above the pad 5;

[0082] Step 2: Start taking the pile, rotate the column 8 until the hydraulic clamp 19 is located on one side of the pile delivery assembly, and clamp a pile body 53 from the pile delivery assembly;

[0083] Step 3: Rotate the column 8 in the opposite direction until the hydraulic clamp 19 is located below the hydraulic hammer 4, so that the pile body 53 is located directly below the hydraulic hammer 4;

[0084] Step 4: Adjust the clutch assembly to the third state, lower the hydraulic hammer 4 until it contacts the pad 5, and then continue to lower it until the pad 5 contacts the top of the pile body 53. Then adjust the clutch assembly to the first state, and lower the hydraulic hammer 4 again until the bottom of the pile body 53 contacts the ground.

[0085] Step 5: Start the hydraulic hammer 4 to start piling, and adjust the height of the hydraulic hammer 4 according to the driving depth until the piling is completed;

[0086] Step 6: Turn off the hydraulic hammer 4, adjust the bottom end of the hydraulic hammer 4 to contact the backing plate 5, adjust the clutch assembly to the second state, and energize the first electromagnet and the second electromagnet;

[0087] Step 7: Lift the hydraulic hammer 4, de-energize the first electromagnet and the second electromagnet when the scissor assembly is reset, and continue to lift the hydraulic hammer 4 to the initial height;

[0088] Step 8: Repeat steps 2 to 7 to complete the piling operation of multiple piles 53 in sequence.

[0089] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0090] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wheeled hydraulic pile driver, comprising a vehicle body (1), a pile frame (3) and a hydraulic hammer (4), wherein the pile frame (3) is mounted on the vehicle body (1), and the hydraulic hammer (4) is slidably mounted on the pile frame (3), characterized in that: Also includes: A column (8), the column (8) is rotatably mounted on the vehicle body (1) and is located on one side of the pile frame (3); A scissor assembly, wherein the scissor assembly is mounted on the column (8), and the scissor assembly can be contracted or expanded along the axial direction of the column (8); A hydraulic clamping claw (19), wherein the hydraulic clamping claw (19) is provided in plurality, and the plurality of hydraulic clamping claws (19) are fixed on the scissor assembly at equal intervals and are used for clamping the pile body at multiple points; An elastic component, the elastic component being provided on the scissor-fork assembly, and the elastic component enabling the scissor-fork assembly to be in an open state when not subjected to external force; A pad (5) is slidably mounted on the column (8). During piling, a portion of the pad (5) contacts the top of the scissor assembly, and another portion contacts the top of the pile body, so that the scissor assembly contracts as the pile body descends; A pile delivery assembly is provided on one side of the column (8), and the pile delivery assembly comprises: A baffle (27), wherein the baffle (27) is fixedly mounted on the vehicle body (1), the baffle (27) is in a runway shape, and one side of the baffle (27) is an open end; A rotating belt (29), wherein the rotating belt (29) is arranged on the inner side of the baffle (27), and a certain distance is formed between the outer side wall of the rotating belt (29) and the inner side wall of the baffle (27); Isolation rods (30), wherein a plurality of isolation rods (30) are provided, and the plurality of isolation rods (30) are fixed on the rotary belt (29) at equal intervals, and pile bodies are vertically placed between adjacent isolation rods (30), and the hydraulic clamp (19) can take the piles from the open end of the baffle (27).

2. A wheeled hydraulic pile driver according to claim 1, characterized in that: The scissor-fork assembly includes a cross bar (14), a plurality of cross bars (14) are provided, the plurality of cross bars (14) are slidably mounted on the column (8), and the hydraulic clamp (19) is fixedly mounted on the side of the cross bar (14); Two fork rods (15) are hinged between two adjacent cross rods (14), and the two fork rods (15) are arranged in an X shape, with one hinge point of a single fork rod (15) being fixed on the cross rod (14) and the other hinge point being slidably arranged on the cross rod (14); The crossbar (14) at the bottom end of the scissor assembly is fixedly connected to the column (8).

3. A wheeled hydraulic pile driver according to claim 2, characterized in that: A roller (191) is rotatably provided on the clamping jaw of the hydraulic clamping jaw (19), and when the hydraulic clamping jaw (19) clamps the pile body, the roller (191) can contact the surface of the pile body; The rotation axis of the roller (191) is perpendicular to the moving direction of the hydraulic clamp (19); The material of the roller (191) is flexible.

4. A wheeled hydraulic pile driver according to claim 3, characterized in that: An upper fixing plate (10) is fixedly provided on the upper side of the column (8), and a lower fixing plate (11) is fixedly provided on the lower side of the column (8); a transverse rod (26) and a first screw rod (24) are respectively installed between the upper fixing plate (10) and the lower fixing plate (11) in the vertical direction; A second slide cylinder (18) is fixedly provided on one side of the crossbar (14), and the second slide cylinder (18) is slidably sleeved on the outer peripheral surface of the first screw rod (24); The outer peripheral surface sliding sleeve of the transverse rod (26) is provided with a first sliding cylinder (17), and the first sliding cylinder (17) and the transverse rod (14) are connected via an elastic component.

5. A wheeled hydraulic pile driver according to claim 4, characterized in that: A slideway (141) is provided in a side of the crossbar (14) close to the transverse rod (26), and the upper side, the lower side and the side close to the transverse rod (26) of the slideway (141) are all open. An insertion cavity (142) is also provided in the crossbar (14), and the insertion cavity (142) is located on a side of the slideway (141) away from the transverse rod (26); The elastic component comprises: An insert rod (60), wherein the insert rod (60) is slidably disposed in the insert cavity (142), and one end of the insert rod (60) is fixedly connected to the first slide cylinder (17); A slide (59), wherein the slide (59) is slidably disposed in the slideway (141), one end of the fork rod (15) is hinged to the slide (59), and the slide (59) is slidably connected to the insertion rod (60); A spring (16) is sleeved on the outer peripheral surface of the insertion rod (60), and one end of the spring (16) contacts the slide (59) and the other end contacts the first slide cylinder (17).

6. The wheeled hydraulic pile driver according to claim 5, characterized in that: The first screw (24) is limited to rotate along its own axis, and a bevel gear set (42) is fixedly provided at the end of the first screw (24); The traverse rod (26) is limited to slide along the length direction of the crossbar (14); A second screw rod (38) is rotatably mounted on the upper fixed plate (10), the second screw rod (38) being limited to move along its own axial direction, and the axis of the second screw rod (38) is perpendicular to the axis of the upper fixed plate (10), and one end of the second screw rod (38) is connected to the transverse rod (26); A second nut (40) is provided on the outer peripheral surface of the second screw (38), and the second nut (40) is threadedly connected to the second screw (38). The bevel gear set (42) can drive the second nut (40) to rotate, so as to move the second screw (38).

7. The wheeled hydraulic pile driver according to claim 6, characterized in that: A first nut (25) is sleeved on the outer peripheral surface of the first screw rod (24), the first nut (25) is threadedly connected to the first screw rod (24), and the first nut (25) is fixedly connected to the backing plate (5); A clutch assembly is provided between the second nut (40) and the bevel gear set (42); when the clutch assembly is in a first state, the bevel gear set (42) drives the second nut (40) to rotate in a first direction; When the clutch assembly is in the second state, the bevel gear set (42) drives the second nut (40) to rotate in a second direction, which is opposite to the first direction; When the clutch assembly is in the third state, the bevel gear set (42) rotates, but the second nut (40) does not rotate.

8. The wheeled hydraulic pile driver according to claim 7, characterized in that: A first electromagnet is provided in the pad (5), and a second electromagnet is provided in the hammer head of the hydraulic hammer (4). The first electromagnet and the second electromagnet attract each other when energized.

9. A piling method for a wheeled hydraulic pile driver, applicable to the wheeled hydraulic pile driver according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Start preparation work, place the pile body in the pile delivery assembly, adjust the height of the scissor assembly and the pad (5) according to the height of the pile body, and at the same time lift the hydraulic hammer (4) to the top of the pad (5); Step 2: Start taking the pile, rotate the column (8) until the hydraulic clamp (19) is located on one side of the pile delivery assembly, and clamp a pile body from the pile delivery assembly; Step 3: Rotate the column (8) in the opposite direction until the hydraulic clamp (19) is located below the hydraulic hammer (4), so that the pile body is located directly below the hydraulic hammer (4); Step 4: Adjust the clutch assembly to the third state, lower the hydraulic hammer (4) until it contacts the pad (5), and then continue to lower it until the pad (5) contacts the top of the pile body, then adjust the clutch assembly to the first state, and lower the hydraulic hammer (4) again until the bottom of the pile body contacts the ground; Step 5: Start the hydraulic hammer (4) to start piling, and adjust the height of the hydraulic hammer (4) according to the driving depth until the piling is completed; Step 6: Turn off the hydraulic hammer (4), adjust the bottom end of the hydraulic hammer (4) to contact the pad (5), adjust the clutch assembly to the second state, and energize the first electromagnet and the second electromagnet; Step 7: Lift the hydraulic hammer (4), de-energize the first electromagnet and the second electromagnet when the scissor assembly is reset, and continue to lift the hydraulic hammer (4) to the initial height; Step 8: Repeat steps 2 to 7 to complete the piling operation of multiple piles in sequence.

Images