Static pressure pile pressing device for pile machine
By designing a static pile pressing device with multiple vertical guide rails and symmetrically distributed pile pressing oil cylinders, the problem of difficulty in sinking the lower pile and docking the upper and lower piles is solved, and the effect of docking at a predetermined height and ensuring concentricity is achieved.
Patent Information
- Application Number
- CN202420992242.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The existing static pile pressing device used in pile machines is prone to difficult to connect the upper pile and the lower pile at a predetermined height due to the sinking of the lower pile during construction, and it is difficult to ensure the concentricity of the upper and lower piles, especially in the case of piles with vertical pins and sockets.
A static pile pressing device is designed, including a fixing frame of multiple vertical guide rails, a symmetrically distributed pile pressing oil cylinder and a pile holding box. The lower pile is fixed by the second pile holding cylinder on the bottom frame of the fixing frame, the upper pile is lifted by a crane, and the upper pile is held by the first pile holding cylinder of the pile holding box, and the upper pile ends are pressed down by the pile pressing cylinder to make the upper and lower pile ends face each other.
Effectively prevent the lower pile from sinking, ensure that the upper and lower piles are connected at a predetermined height, and ensure the concentricity of the upper and lower piles. Especially in the case of piles with pins and sockets, the docking can be completed quickly and effectively.
Smart Images
Figure CN222648776U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation construction, in particular to a static pressure pile pressing device for a pile driver. Background Art
[0002] Compared with piling devices such as vibratory hammers, static pressure pile devices or pile planting devices used in pile drivers produce less noise during construction. They are widely used in the construction of prefabricated piles that are first drilled with a spiral drill rod and then mixed with cement soil or jet cement slurry, and then statically pressed.
[0003] The static pressure pile driving device for pile drivers in the prior art generally comprises a fixed frame which also serves as a vertical guide rail, at least two symmetrically distributed pile driving cylinders, a pile holding box which is driven by the pile driving cylinders and slides along the guide rail, and a plurality of pile holding cylinders symmetrically arranged on the pile holding box.
[0004] However, the static pressure pile-pressing device for pile drivers in the prior art still has the following defects: 1. Generally, the lower pile is pressed to a certain position, and then the pile-holding cylinder is released, and then the upper pile is lifted by a crane, and then the upper pile is held by the pile-holding cylinder of the pile-pressing box, so that the upper pile and the lower pile are butted, and then the upper pile and the lower pile are fixedly connected by flange bolt nut connection or welding. However, in the actual construction process, the lower pile is easy to sink in cement soil or cement slurry, and cannot be connected at a predetermined height. It is difficult to align the upper and lower piles, and the concentricity of the upper and lower piles during the butt connection process is also difficult to ensure. 2. If there are piles with several vertical pins and vertical sockets distributed along the circumference on the butt surface of the upper and lower piles, sometimes it is difficult to ensure that the upper and lower end surfaces of the upper and lower piles are butted and attached to each other using only the deadweight of the upper pile. The above defects bring great inconvenience to the construction and increase a lot of extra workload and time. Utility Model Content
[0005] The utility model aims to solve the technical problem of providing a static pressure pile device for a pile driver which can prevent the lower pile from sinking, can butt the upper pile and the lower pile at a predetermined height and can ensure the concentricity of the upper pile and the lower pile.
[0006] The technical solution of the utility model is to provide a static pressure pile driving device for a pile driver, comprising a fixed frame provided with a plurality of vertical guide rails, at least two pile driving cylinders symmetrically distributed on the fixed frame, a pile holding box driven by the pile driving cylinders and sliding along the vertical guide rails, wherein a plurality of first pile holding cylinders are provided on the pile holding box; the static pressure pile driving device for a pile driver further comprises a plurality of second pile holding cylinders arranged on a bottom frame of the fixed frame.
[0007] After adopting the above structure, the static pressure pile pressing device for pile driver of the utility model has the following advantages:
[0008] During the construction process, after the lower pile is pressed to a predetermined height, a plurality of second pile-holding cylinders fixed on the bottom frame of the fixed frame are used to hold the lower pile to fix it, and then the upper pile is lifted by a crane. After being held by the first pile-holding cylinder of the pile-holding box, at least two pile-pressing cylinders are used to press down so that the end face of the upper pile and the end face of the lower pile are butted against each other. The static pressure pile-pressing device for a pile driver of the utility model can prevent the lower pile from sinking or sliding down, can butt the upper pile and the lower pile at a predetermined height, and can effectively ensure the concentricity of the upper pile and the lower pile.
[0009] If a pile is encountered with a plurality of vertical pins and vertical insertion holes on the butt joint surface of the upper and lower piles, after the lower pile is pressed to a predetermined height, a plurality of second pile holding cylinders fixed on the bottom frame of the fixing frame are used to hold the lower pile to fix it, and then the upper pile is lifted by a crane. After being held by the first pile holding cylinder of the pile holding box, at least two pile pressing cylinders are used to press down so that the end face of the upper pile is butted against the end face of the lower pile, which effectively overcomes the defect that it is difficult to ensure that the upper and lower end faces of the upper and lower piles are butted against each other by only using the dead weight of the upper section of the pile, and the upper and lower end faces of the upper and lower piles with a plurality of vertical pins and vertical insertion holes can be quickly and effectively brought into position and abutted against each other.
[0010] The static pressure pile pressing device of the utility model for a pile driver has a simple structure and is convenient to construct, thus greatly improving the construction efficiency and having an obvious technical effect.
[0011] Furthermore, the pile holding box comprises a first rectangular hollow frame with a first pile pressing hole in the center and formed by welding a plurality of first steel plates, and a plurality of first reinforcing ribs connecting the upper and lower first steel plates and the inner and outer first steel plates are welded in the first rectangular hollow frame. With the above structure, the pile holding box of the static pressure pile pressing device of the pile driver of the utility model has a firm structure and good mechanical properties, which provides a stable structural foundation for the pile holding box to ensure the above technical effects.
[0012] Furthermore, the fixing frame includes two symmetrical arch steel frames and a bottom frame, the bottom ends of the two symmetrical arch steel frames are welded and fixed to the horizontal bottom frame, the bottom frame includes a second rectangular hollow frame with a second pile hole in the center and formed by welding a plurality of second steel plates, and a plurality of second reinforcing ribs connecting the upper and lower second steel plates and the inner and outer second steel plates are welded in the second rectangular hollow frame. After adopting the above structure, the fixing frame of the static pressure pile device of the pile driver of the utility model has a firm structure and good mechanical properties, and the arch steel frame leaves enough height required for the stroke of the pile pressure cylinder, providing a stable and applicable structural foundation for the fixing frame to ensure the above technical effects.
[0013] Furthermore, two pile-driving cylinders are symmetrically fixed vertically in the middle of the width of the two sides of the first rectangular hollow frame, and the free end of the piston rod of each pile-driving cylinder is fixed on the arch-shaped crossbeam of the arch-shaped steel frame; the vertical guide rails are arranged on the inner corners of the four rectangular steel columns of the two symmetrical arch-shaped steel frames, and the four outer corners of the first rectangular hollow frame of the pile-holding box are slidably matched on the vertical guide rails of the inner corners of the four rectangular steel columns. The design of the arched crossbeam ensures the required height travel of the pile-driving cylinder. After adopting the above structure, the firmness of the pile-driving cylinder fixation, the excellent mechanical properties of the pile-driving, the sliding flexibility and the required height space are further guaranteed.
[0014] Furthermore, the four first pile-holding oil cylinders are horizontally symmetrically fixed in the middle of the width of the other two frames of the first rectangular hollow frame, and the free ends of the piston rods of the four first pile-holding oil cylinders are respectively extended into the first pile-pressing holes. With the above structure, the first pile-holding oil cylinders are reasonably arranged, firmly fixed, and have a strong pile-holding force.
[0015] The several technical solutions described in the above "further" cooperate with each other, further ensuring the technical effects of preventing the lower pile from sinking, connecting the upper pile and the lower pile at a predetermined height, effectively ensuring the concentricity of the upper pile and the lower pile, and quickly and effectively connecting the upper and lower end surfaces of the upper and lower piles with a number of vertical pins and vertical sockets into place and sticking to each other.
[0016] Furthermore, every two first pile-holding oil cylinders are distributed up and down on each frame of the first rectangular hollow frame. After adopting the above structure, the layout of the first pile-holding oil cylinders is more reasonable, the pile-holding force is greater and more concentrated, and the technical effects of preventing the lower pile from sinking and docking the upper pile and the lower pile at a predetermined height, effectively ensuring the concentricity of the upper pile and the lower pile, and quickly and effectively docking the upper and lower end surfaces of the upper and lower piles with a plurality of vertical pins and vertical sockets in place and sticking to each other are further ensured.
[0017] Furthermore, the second pile-holding oil cylinders are symmetrically and horizontally fixed in the middle of the width of the two frame frames of the second rectangular hollow frame, and the free ends of the piston rods of the two second pile-holding oil cylinders are respectively extended into the second pile-pressing holes. After adopting the above structure, the two symmetrically distributed second pile-holding oil cylinders can meet the basic needs of construction, further ensure the prevention of sinking of the lower pile, and can dock the upper pile and the lower pile at a predetermined height, and can effectively ensure the concentricity of the upper pile and the lower pile, and can quickly and effectively dock the upper and lower end surfaces of the upper and lower piles with a plurality of vertical pins and vertical sockets.
[0018] Furthermore, the second pile-holding oil cylinders are evenly and horizontally fixed in the middle of the width of the four sides of the second rectangular hollow frame, and the free ends of the piston rods of the four second pile-holding oil cylinders are each extended into the second pile-pressing hole. The above structure provides another specific implementation scheme in parallel with the above two second pile-holding oil cylinders, which can meet the needs of preventing the lower pile from sinking and the docking and end-face contact of the upper and lower piles of larger diameters, and further ensures the technical effects of preventing the lower pile from sinking and docking the upper and lower piles at a predetermined height, effectively ensuring the concentricity of the upper and lower piles, and quickly and effectively docking the upper and lower end faces of the upper and lower piles with a plurality of vertical pins and vertical sockets.
[0019] Furthermore, a respective pile holding block is fixed on the end face of the free end of the piston rod of each first pile holding cylinder, and the inner surface of the pile holding block in contact with the outer peripheral surface of the pile has horizontal anti-skid patterns; a respective pile holding block is also fixed on the end face of the free end of the piston rod of each second pile holding cylinder, and the inner surface of the pile holding block in contact with the outer peripheral surface of the pile also has horizontal anti-skid patterns. With the above structure, the requirements of the device for holding tightness and opposite butt-jointing pressing force are further met, and the technical effects of preventing the lower pile from sinking, butt-jointing the upper and lower piles at a predetermined height, effectively ensuring the concentricity of the upper and lower piles, and quickly and effectively butt-jointing the upper and lower end faces of the upper and lower piles with a number of vertical pins and vertical sockets. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of the static pressure pile device used in the pile driver of the utility model. Figure 1 (The fastening screws or bolt nuts are not shown in the figure, and the same applies to the following figures).
[0021] Figure 2 This is a schematic diagram of the structure of the static pressure pile device used in the pile driver of the utility model. Figure 2 .
[0022] Figure 3 This is a schematic diagram of the structure of the static pressure pile device used in the pile driver of the utility model. Figure 3 .
[0023] Figure 4 This is a schematic diagram of the structure of the static pressure pile device used in the pile driver of the utility model. Figure 4 .
[0024] Figure 5 It is a structural schematic diagram of the static pressure pile pressing device for a pile driver of the utility model, in which the first outer steel plate and the second outer steel plate are omitted.
[0025] Figure 6 This is a schematic diagram of the structure of the static pressure pile device used in the pile driver of the utility model holding the upper and lower piles Figure 1 (The upper and lower piles are drawn with the height omitted).
[0026] Figure 7 This is a schematic diagram of the structure of the static pressure pile device used in the pile driver of the utility model holding the upper and lower piles Figure 2 (The upper and lower piles are drawn with the height omitted).
[0027] Figure 8 The utility model is a schematic structural diagram of a static pressure pile pressing device for a pile driver connected to the pile driver.
[0028] As shown in the figure:
[0029] 1. fixed frame, 11. second pile holding cylinder, 12. arch steel frame, 121. arch crossbeam, 13. second pile pressing hole, 14. second rectangular hollow frame, 141. second steel plate, 142. second reinforcing rib plate, 15. rectangular steel column, 16. second through hole, 17. second limit plate, 18. vertical guide rail;
[0030] 2. Pile-pressing cylinder, 21. Piston rod of the pile-pressing cylinder;
[0031] 3. pile holding box, 31. first pile holding cylinder, 32. first pile pressing hole, 33. first rectangular hollow frame, 331. first steel plate, 332. first reinforcing rib plate, 34. L-shaped notch, 35. first through hole, 36. first limit plate;
[0032] 4. Arc-shaped pile holding block, 41. Horizontal anti-slip pattern;
[0033] 5. Connecting steel frame, 51. Connecting ear plate, 511. Connecting hole;
[0034] 6. Pile driver;
[0035] 7. pile up, 71. vertical bolt;
[0036] 8. Pile down, 81. Vertically insert the socket. DETAILED DESCRIPTION
[0037] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these specific implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each specific implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 shown.
[0039] The utility model is a static pressure pile driving device for a pile driver, comprising a fixed frame 1 provided with a plurality of vertical guide rails 18, at least two, for example, two pile driving cylinders 2 symmetrically distributed on the fixed frame 1, a pile holding box 3 driven by the pile driving cylinders 2 and sliding along the vertical guide rails 18, and a plurality of first pile holding cylinders 31 are provided on the pile holding box 3.
[0040] The static pressure pile driving device for a pile driver of the utility model further comprises a plurality of second pile holding cylinders 11 arranged on the bottom frame of the fixing frame 1 , such as the second rectangular hollow frame 14 .
[0041] The pile holding box 3 comprises a first rectangular hollow frame 33 formed by welding a plurality of first steel plates 331 and provided with a first pile pressing hole 32 in the center. A plurality of first reinforcing ribs 332 connecting the upper and lower first steel plates and the inner and outer first steel plates are welded inside the first rectangular hollow frame 33. The first steel plates 331 include a first upper steel plate, a first lower steel plate, a first inner steel plate and a first outer steel plate. Figure 5 The first outer steel plate is omitted, and the first upper steel plate, the first lower steel plate, the first inner steel plate and the first reinforcing rib 332 are shown.
[0042] The fixing frame 1 includes two symmetrical arch steel frames 12 and a bottom frame. The bottom ends of the two symmetrical arch steel frames 12 are welded and fixed to the horizontal bottom frame. The bottom frame includes a second rectangular hollow frame 14 with a second pile hole 13 in the center and welded by multiple second steel plates 141. Multiple second reinforcing ribs 142 connecting the upper and lower second steel plates and the inner and outer second steel plates are welded in the second rectangular hollow frame 14. The second steel plates 141 include a second upper steel plate, a second lower steel plate, a second inner steel plate, and a second outer steel plate. Figure 5 The second outer steel plate is omitted in the figure, and the second upper steel plate, the second lower steel plate, the second inner steel plate and the second reinforcing rib plate 142 are shown. It is easy to understand that the first reinforcing rib plate 332 and the second reinforcing rib plate 142 are both plates made of steel.
[0043] Two pile-pressing oil cylinders 2 are symmetrically fixed vertically in the middle of the width of the two frames of the first rectangular hollow frame 33 of the pile-holding box 3. The free end of the piston rod 21 of each pile-pressing oil cylinder is fixed, such as by welding or by screwing a connecting block and a screw on the arched cross beam 121 of the arched steel frame 12, such as the bottom of the arched cross beam 121. Each pile-pressing oil cylinder 2 can be welded and fixed with the vertical through holes of the two frames, such as the through holes on the first upper steel plate. The vertical guide rail 18 is arranged on the respective inner corners of the four rectangular steel columns 15 of the two symmetrical arched steel frames 12, and can also be called the vertical guide rail 18, i.e., the respective right-angled inner corners of the four rectangular steel columns 15. The four outer corners of the first rectangular hollow frame 33 of the pile-holding box 3, i.e., the respective L-shaped notches 34, are slidably matched on the vertical guide rail 18 formed by the respective inner corners of the four rectangular steel columns 15.
[0044] The four first pile-holding oil cylinders 31 are fixed horizontally and symmetrically in the middle of the width of the other two frames of the first rectangular hollow frame 33. Each of the first pile-holding oil cylinders 31 can be welded and fixed to the respective horizontal first through holes 35 of the two frames, such as through holes on the first inner steel plate and the first outer steel plate, or the first limit plate 36 and screws can be used to fix the outer side of the frame to prevent the cylinder body of the first pile-holding oil cylinder 31 from slipping out. The free ends of the piston rods of the four first pile-holding oil cylinders 31 are respectively extended into the first pile-pressing holes 32.
[0045] Every two first pile holding cylinders 31 are distributed up and down on each frame of the first rectangular hollow frame 33 of the pile holding box 3. That is, the four first pile holding cylinders 31 are respectively installed on two symmetrical frames of the first rectangular hollow frame 33 of the pile holding box 3.
[0046] The second pile holding oil cylinder 11 can be symmetrical and horizontally fixed to the middle of the width of the two frames of the second rectangular hollow frame 14 of the bottom frame of the fixing frame 1. Each second pile holding oil cylinder 11 can be welded and fixed to the horizontal second through holes 16 of the two frames, such as the through holes on the second inner steel plate and the second outer steel plate, and can also be fixed on the outside of the frame by using a second limit plate 17 and screws to prevent the cylinder body of the second pile holding oil cylinder 11 from slipping out. The free ends of the piston rods of the two second pile holding oil cylinders 11 extend into the second pile pressing hole 13.
[0047] Or: the second pile-holding oil cylinder can also be evenly and horizontally fixed to the bottom frame of the fixed frame, one in each of the four sides of the second rectangular hollow frame, each second pile-holding oil cylinder can be welded and fixed to the horizontal second through holes of the four sides, such as the through holes on the second inner steel plate and the second outer steel plate, or fixed with a stop plate and screws on the outside of the frame to prevent the cylinder of the second pile-holding oil cylinder from slipping out of the cylinder body. The free ends of the piston rods of the four second pile-holding oil cylinders extend into the second pile-pressing holes.
[0048] Each first pile-holding cylinder piston rod has a pile-holding block fixed to its free end, and the inner surface of the pile-holding block that contacts the outer circumference of the pile has horizontal anti-skid patterns. Each second pile-holding cylinder piston rod has a pile-holding block fixed to its free end, and the inner surface of the pile-holding block that contacts the outer circumference of the pile also has horizontal anti-skid patterns. The pile-holding block can be a hard rubber plate. Figure 2 , Figure 3 and Figure 4 As shown, the pile holding block matched with the circular pile can be an arc-shaped pile holding block 4. The free end of the piston rod of each first pile holding cylinder 31 has an arc-shaped pile holding block 4, and the free end of the piston rod of each second pile holding cylinder 11 also has an arc-shaped pile holding block 4. The arc-shaped pile holding block 4 of the hard rubber plate has an arc-shaped horizontal anti-skid pattern 41 on the surface that is in contact with the outer circumference of the circular pile.
[0049] The pile holding block matched with the rectangular pile can be a flat pile holding block. The flat pile holding block of the hard rubber plate has a straight horizontal anti-skid pattern on the surface that is in contact with a straight surface of the outer original peripheral surface of the rectangular pile.
[0050] like Figure 2 and Figure 8 As shown, the outer sides of two of the four vertical rectangular steel columns 15 can be fixed with, for example, a connecting steel frame 5 or a connecting block welded thereto for connecting and fixing to a construction platform or a chassis of a pile driver 6. The outer sides of the connecting steel frame 5 are provided with a plurality of connecting ear plates 51 for hinge pin hinge connection and / or bolt and nut connection and provided with connecting holes 511.
[0051] like Figure 6 and Figure 7 As shown, during the construction process, after the lower pile 8 or the lower section pile is pressed to a predetermined height, the lower pile 8 is held and fixed by a plurality of second pile holding cylinders 11 fixed to the bottom frame of the fixing frame 1, such as the second rectangular hollow frame 14, and then the upper pile 7 or the upper section pile is hoisted by a crane. After being held by the first pile holding cylinder 31 on the pile holding box 3, such as the first rectangular hollow frame 33, at least two pile pressing cylinders 2 are used to press down so that the lower end surface of the upper pile 7 is butted against the upper end surface of the lower pile 8. If a pile is encountered in which the upper and lower piles 8 have a plurality of vertical latches 71 and vertical insertion holes 81 distributed along the circumference on the mating surface, such as a plurality of vertical latches 71 distributed along the circumference on the lower end surface of the upper pile 7 and a plurality of vertical insertion holes 81 distributed along the circumference on the upper end surface of the lower pile 8, which correspond to the vertical latches 71 one by one, after the lower pile 8 is pressed to a predetermined height, a plurality of second pile holding cylinders 11 fixed to the bottom frame of the fixing frame 1, such as the second rectangular hollow frame 14, are used to hold the lower pile 8 to fix it, and then the upper pile 7 is hoisted by a crane, and after being held by the first pile holding cylinder 31 on the first rectangular hollow frame 33 through the pile holding box 3, at least two pile pressing cylinders 2 are used to press down so that the lower end surface of the upper pile 7 is butted against the upper end surface of the lower pile 8.
[0052] The above unmarked parts, structures or quantities are not shown in the figures; some parts are not marked. The drawings are only for reference. If there is any inconsistency between the drawings and the text description or between the drawings, the text description shall prevail.
[0053] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A static pressure pile driving device for a pile driver, comprising a fixed frame provided with a plurality of vertical guide rails, at least two pile driving cylinders symmetrically distributed on the fixed frame, a pile holding box driven by the pile driving cylinders and sliding along the vertical guide rails, and a plurality of first pile holding cylinders provided on the pile holding box; characterized in that: It also includes a plurality of second pile-holding cylinders arranged on the bottom frame of the fixing frame.
2. The static pressure pile driving device for a pile driver according to claim 1, characterized in that: The pile holding box comprises a first rectangular hollow frame with a first pile pressing hole in the center and formed by welding a plurality of first steel plates, wherein a plurality of first reinforcing ribs connecting the upper and lower first steel plates and the inner and outer first steel plates are welded in the first rectangular hollow frame.
3. The static pressure pile driving device for a pile driver according to claim 2, characterized in that: The fixing frame includes two symmetrical arch-shaped steel frames and a bottom frame. The bottom ends of the two symmetrical arch-shaped steel frames are welded and fixed to the horizontal bottom frame. The bottom frame includes a second rectangular hollow frame with a second pile hole in the center and welded by multiple second steel plates. Multiple second reinforcing ribs connecting the upper and lower second steel plates and the inner and outer second steel plates are welded in the second rectangular hollow frame.
4. The static pressure pile driving device for a pile driver according to claim 3, characterized in that: The two pile-driving cylinders are symmetrically fixed vertically in the middle of the width of the two side frames of the first rectangular hollow frame, and the free end of the piston rod of each pile-driving cylinder is fixed on the arch crossbeam of the arch-type steel frame; the vertical guide rails are arranged on the inner corners of the four rectangular steel columns of the two symmetrical arch-type steel frames, and the four outer corners of the first rectangular hollow frame of the pile-holding box are slidably matched on the vertical guide rails of the inner corners of the four rectangular steel columns.
5. The static pressure pile driving device for a pile driver according to claim 4, characterized in that: The four first pile-holding oil cylinders are symmetrically fixed horizontally at the middle of the width of the other two side frames of the first rectangular hollow frame, and the free ends of the piston rods of the four first pile-holding oil cylinders are respectively extended into the first pile-pressing holes.
6. The static pressure pile driving device for a pile driver according to claim 5, characterized in that: Every two first pile-holding oil cylinders are distributed up and down on each frame of the first rectangular hollow frame.
7. The static pressure pile driving device for a pile driver according to claim 6, characterized in that: The second pile-holding oil cylinders are symmetrically and horizontally fixed one at each position in the middle of the width of the two frame frames of the second rectangular hollow frame, and the free ends of the piston rods of the two second pile-holding oil cylinders extend into the second pile-pressing holes respectively.
8. The static pressure pile driving device for a pile driver according to claim 6, characterized in that: The second pile-holding oil cylinders are evenly and horizontally fixed one at each of the middles of the widths of the four sides of the second rectangular hollow frame, and the free ends of the piston rods of the four second pile-holding oil cylinders extend into the second pile-pressing holes.
9. The static pressure pile driving device for a pile driver according to claim 1, characterized in that: A respective pile holding block is fixed to the end face of the free end of the piston rod of each first pile holding cylinder, and a horizontal anti-skid pattern is formed on the inner face of the pile holding block that is in contact with the outer peripheral face of the pile; a respective pile holding block is also fixed to the end face of the free end of the piston rod of each second pile holding cylinder, and a horizontal anti-skid pattern is also formed on the inner face of the pile holding block that is in contact with the outer peripheral face of the pile.