An eccentric motor-excited static pressure pile driving device

Abstract

The application discloses a eccentric motor exciting type static pressure pile sinking device, and relates to the technical field of building construction, which comprises a pre-poured surface, a ground screw rod pre-buried in the pre-poured surface, a counterforce frame arranged on the top of the pre-poured surface, and a pile body, wherein the counterforce frame is fixedly connected with hydraulic rods, the counterforce frames are slidably connected with isolation plates, the working part of the hydraulic rod is fixedly connected with the isolation plate, the isolation plate is provided with an eccentric exciter, the bottom of the isolation plate is provided with a pile body clamping device, the eccentric exciter is rigidly connected with the pile body clamping device, the pile body clamping device is used for clamping the pile body, and the eccentric exciter is used for generating an exciting force; the exciting force generated by the eccentric exciter is applied to the soil layer through the pile body, the soil layer structure is damaged, and the sinking speed of the pile body is improved under the static pressure assistance of the hydraulic rod and the isolation plate. The application can optimize the piling performance through the synergistic effect of the exciting force and the static pressure, and can control the levelness of the pile body through the laser and the leveling technology of the positioning table.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an eccentric motor-excited static pressure pile driving device. Background Technology

[0002] In traditional pile foundation construction, pile driving technology is mainly divided into two methods: vibratory pile driving and static pressure pile driving. Vibratory pile driving relies on eccentric motors to generate high-frequency vibrations, causing the soil around the pile to liquefy or loosen, thereby reducing penetration resistance. Static pressure pile driving, on the other hand, uses hydraulic or mechanical pressure to smoothly press the pile into the soil layer. Existing single pile driving technologies are difficult to balance construction efficiency, pile integrity, and soil adaptability. Especially under complex geological conditions, auxiliary pre-drilling or repeated adjustments to construction parameters are often required, leading to extended construction period and increased costs.

[0003] In addition, traditional pile drivers rely on manual leveling instruments for base leveling, which is cumbersome and has limited accuracy. The tilt of the base can easily cause deviations in the verticality of the pile, affecting the quality of the project. Although some advanced equipment uses electronic sensors for automatic leveling, it is expensive and has poor anti-interference capabilities.

[0004] Therefore, there is an urgent need for a pile driving device that can combine the advantages of both vibration and static pressure, and integrate an efficient leveling system, in order to improve construction efficiency, reduce energy consumption, and adapt to diverse geological conditions.

[0005] Patent CN202210609821 discloses an intelligent anchor static pressure pile driver, including an anchor pile driving reaction frame, a hydraulic servo jack, and a PLC controller. The anchor pile driving reaction frame includes a reaction base, a fully threaded column, a reaction top beam, a servo synchronous drive mechanism, and an automatic centering and clamping mechanism. The lower end of the fully threaded column is connected to the reaction base, and the upper end of the column is equipped with a reaction top beam. The servo drive mechanism is installed on the fully threaded column, and the hydraulic servo jack is installed below the reaction top beam and controlled by the PLC controller. This invention's press-fitting machine adopts an electromechanical-hydraulic integrated structure, which meets the requirements of automatic pile clamping and centering, (welding), pile pressing, servo drive automatic range change, and fully automatic control of pile pressing force and pile pressing depth data acquisition, with high automation and precision. The reaction frame assembly structure and fully threaded column structure can be extended with screw rods according to the space height of the construction site to meet the installation problem in the narrow space of the construction site, making the installation simple and safe. However, it is difficult to guarantee the verticality of the pile body during operation, and it is only suitable for construction of circular pile bodies. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an eccentric motor-excited static pressure pile driving device. This invention can optimize pile driving performance through the synergistic effect of excitation force and static pressure, while controlling the levelness of the pile body through laser and positioning table leveling technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: an eccentric motor-excited static pressure pile driving device, comprising a precast surface, a ground screw embedded in the precast surface, a reaction frame placed on top of the precast surface, and a pile body, characterized in that: a hydraulic rod is fixedly connected to the reaction frame, an isolation plate is slidably connected between the reaction frames, and the working part of the hydraulic rod is fixedly connected to the isolation plate;

[0008] An eccentric vibrator is provided on the isolation plate, and a pile clamping device is provided at the bottom of the isolation plate. The eccentric vibrator is rigidly connected to the pile clamping device.

[0009] The pile clamping device is used to clamp the pile body, and the eccentric vibrator is used to generate excitation force.

[0010] The excitation force generated by the eccentric vibrator acts on the soil layer through the pile body, destroying the soil structure, and increasing the sinking speed of the pile body under the static pressure assistance of the hydraulic rod and the isolation plate.

[0011] According to the above technical solution, the eccentric vibrator includes a vibration table, and a plurality of transmission shafts are fixedly and through the vibration table. The transmission shafts pass downward through the isolation plate and are fixedly connected to the clamp fixing plate. A pile clamping device is provided between the clamp fixing plate and the isolation plate.

[0012] The top of the excitation table is symmetrically provided with excitation chambers, and two sets of eccentric wheels with identical eccentric blocks are provided in the excitation chambers. The eccentric wheels are connected by a gear transmission.

[0013] The gears inside the symmetrically arranged excitation chambers are synchronously connected via a transmission belt assembly.

[0014] One of the eccentric wheels is connected to an external drive motor.

[0015] According to the above technical solution, damping springs are sleeved on the outer side of the transmission shaft and between the excitation table, the clamp fixing plate and the isolation plate. Multiple piston-type accumulators are also provided between the clamp fixing plate and the isolation plate.

[0016] According to the above technical solution, the pile clamping device includes a guide shell, a first clamping head, and a second clamping head. The first clamping head and the second clamping head are used to clamp the pile body. The second clamping head is located on both sides of the first clamping head. The second clamping head has the same structure as the first clamping head but different size. The second clamping heads are arranged in pairs. A back plate is fixedly connected to the side of the first clamping head and the second clamping head near the guide shell.

[0017] The first clamping head and the second clamping head include a guide wedge block, a pile clamping block, a small hydraulic cylinder, and a lower support platform. The guide wedge block is fixedly connected to the lower support platform. The guide wedge block and the lower support platform are fixedly connected to the back plate. An inclined slope is provided on the side of the guide wedge block away from the guide shell, and the pile clamping block is on the inclined slope. A small hydraulic cylinder is provided on the side of the lower support platform near the pile clamping block. The working part of the small hydraulic cylinder is near the pile clamping block.

[0018] According to the above technical solution, a guide drive group one is provided at the position of the guide housing corresponding to the first clamping head, and a guide drive group two is provided at the position of the guide housing corresponding to the second clamping head. The guide drive group one and the guide drive group two are composed of a guide shaft and a lead screw. The lead screw of the guide drive group one and the guide drive group two are threadedly connected to the side of the guide housing near the back plate.

[0019] The number of the second guide drive group corresponds to the number of the second clamping heads;

[0020] The guide shafts and lead screws of the first and second guide drive groups pass through the guide housing and are close to the first and second clamping heads. The guide shaft and lead screw of the first guide drive group are fixedly connected to the back plate on the first clamping head, and the guide shaft and lead screw of the second guide drive group are hinged to the back plate on the second clamping head.

[0021] According to the above technical solution, the lead screws of the first guide drive group and the second guide drive group are both connected to a spline shaft on the side away from the back plate. The spline shaft is rotatably connected to the guide housing and is slidably connected to the lead screws of the first guide drive group and the second guide drive group.

[0022] A gear two is fixedly connected to the outside of the spline shaft corresponding to the second guide drive group. The gear two on the same side can rotate synchronously through a gear three. The gear three is slidably connected to the guide housing. The gear three can disengage from the meshing state with the gear two.

[0023] The splined shaft has an internal hexagonal groove in its center.

[0024] According to the above technical solution, a horizontal positioner is provided on the ground screw. The horizontal positioner is used to level the machine. The horizontal positioner includes a limiting threaded frustum. The limiting threaded frustum is threadedly connected to the outside of the ground screw. A reflective inclined surface is provided on the top of the limiting threaded frustum. A light-transmitting ring is sleeved on the outside of the reflective inclined surface. The adjacent surfaces of the reflective inclined surface and the light-transmitting ring are in contact. A light-shielding sleeve is sleeved on the outside of the light-transmitting ring. A plurality of equidistant positioning holes are opened on the light-shielding sleeve. A light-transmitting hole is opened at the position of the limiting threaded frustum corresponding to the positioning hole, and a diffuser is installed in the hole.

[0025] According to the above technical solution, a plurality of bending clamping blocks are fixedly connected to the top of the limiting threaded frustum, and there are gaps between the bending clamping blocks. A positioning threaded sleeve is threadedly connected to the outer side of the bending clamping block. The top of the positioning threaded sleeve is thickened, and the top of the positioning threaded sleeve is inclined on the side close to the bending clamping block. A rubber ring is provided between the bending clamping block and the ground screw.

[0026] According to the above technical solution, the reaction frame is placed on the support platform, and an adjustment device is fixedly connected to the bottom of the support platform. The adjustment device includes a pile driver adjustment device and a pile column adjustment device. The pile driver adjustment device includes a protective shell. A double-outlet hydraulic cylinder is fixedly connected inside the protective shell. Horizontal adjustment wedges are fixedly connected to the working parts at both ends of the double-outlet hydraulic cylinder. A universal wheel is provided between the horizontal adjustment wedge and the double-outlet hydraulic cylinder. The side of the universal wheel away from the double-outlet hydraulic cylinder is hinged to the protective shell. A second return spring is provided on the universal wheel. The second return spring pulls the universal wheel to have a tendency to rotate toward the inside of the protective shell. A lower support wedge is provided on the bottom side of the horizontal adjustment wedge. A universal wheel support groove is opened on the side of the lower support wedge near the universal wheel.

[0027] The bottom side of the horizontal adjustment wedge block is provided with an inclined surface two, and a lower support wedge block is slidably connected to the inclined surface two. The lower support wedge block is provided with a limiting boss on both sides near the double-outlet hydraulic cylinder. The protective shell is provided with a limiting block at the position corresponding to the limiting boss. The middle part of the horizontal adjustment wedge block and the lower support wedge block is provided with a groove, which corresponds to the ground screw. The horizontal adjustment wedge block is used to support the bottom side of the horizontal positioner.

[0028] According to the above technical solution, the pile column control device includes a guide angle plate, and a guide clamping platform is slidably connected to the side of the guide angle plate near the pile body. The guide angle plate applies a force away from the pile body to the guide clamping platform through a return spring. A pushing platform is slidably connected to the side of the guide angle plate near the guide clamping platform. The contact surface between the pushing platform and the guide clamping platform is an inclined guide surface. A pressure column is fixedly connected to the bottom at the position corresponding to the pushing platform.

[0029] This invention provides an eccentric motor-excited static pressure pile driving device. It has the following beneficial effects:

[0030] This invention generates periodic excitation force through the operation of an eccentric vibrator, which is transmitted to the soil interface through the pile body, disrupting the soil structure and reducing frictional resistance. At the same time, the hydraulic rod applies constant vertical pressure to the isolation plate, pushing the pile body to sink. This synergistic effect with the vibration improves the penetration efficiency. The two work synchronously, with the vibration causing temporary liquefaction or loosening of the soil and the constant vertical pressure maintaining the remaining resistance, thereby increasing the sinking speed of the pile body and improving work efficiency.

[0031] This invention controls the tilt angle of the back plate on the second clamping head by guiding the lead screw on the second drive group. The adjustable clamping surface can dynamically match piles with different cross-sectional shapes without replacing clamping components. For circular piles, the tilted clamping surface can form an envelope contact, increasing the contact area. For square piles, adjusting the tilt angle can make the clamping surface fit tightly against the plane, significantly improving compatibility with different geometric shapes.

[0032] This invention, by pre-installing a horizontal locator on the ground screw and combining it with a laser level for high-precision leveling, allows workers to visually observe the position or dispersion effect of the laser spot when it passes through the positioning hole and is refracted by the light-transmitting ring. This enables them to adjust the anchor height in real time, ensuring that the horizontal error of each support point is controlled within millimeters. This significantly improves the horizontal accuracy of the pile driver base and avoids deviations in the verticality of the pile due to base tilt. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This invention as a whole Figure 1 A schematic diagram of the unfolded structure;

[0035] Figure 3 This is a schematic diagram of the overall eccentric vibrator of the present invention;

[0036] Figure 4 This is a schematic diagram of the overall pile clamping device and eccentric vibrator of the present invention;

[0037] Figure 5 This is a schematic diagram of the overall pile clamping device of the present invention;

[0038] Figure 6 This invention as a whole Figure 5 Rear structural diagram;

[0039] Figure 7 This invention as a whole Figure 5 A schematic diagram of the structure from the front sectional view;

[0040] Figure 8 This invention as a whole Figure 5 A partial structural diagram;

[0041] Figure 9 This is a schematic diagram of the overall horizontal positioner of the present invention;

[0042] Figure 10 This is a schematic diagram of the stepped cross-section of the overall horizontal positioner of the present invention;

[0043] Figure 11 This is a schematic diagram of the overall control device of the present invention;

[0044] Figure 12 This is a half-sectional structural diagram of the overall control device of the present invention;

[0045] Figure 13 The overall control device of the present invention Figure 2 A schematic diagram of area A.

[0046] In the diagram: 1. Reaction frame; 2. Hydraulic rod; 3. Isolation plate; 4. Eccentric vibrator; 401. Vibration table; 402. Transmission shaft; 403. Clamping device fixing plate; 404. Vibration damping spring; 405. Eccentric wheel; 406. Gear 1; 407. Transmission belt assembly; 408. Vibration chamber; 5. Pile clamping device; 501. Guide housing; 502. First clamping head; 503. Second clamping head; 504. Back plate; 505. Guide drive assembly 1; 506. Guide drive assembly 2; 507. Gear 2; 508. Gear 3; 509. Splined shaft; 510. Guide wedge block; 511. Pile clamping block; 512. Small hydraulic cylinder; 513. Lower support platform; 6. Support platform surface; 7. Horizontal positioner 701. Limiting threaded frustum; 702. Light-shielding sleeve; 703. Positioning threaded sleeve; 704. Diffusing head; 705. Positioning hole; 706. Reflective slope; 707. Bending clamping block; 708. Rubber ring; 709. Light-transmitting ring; 8. Control device; 801. Protective shell; 802. Double-outlet hydraulic cylinder; 803. Universal wheel; 804. Second return spring; 805. Horizontal control wedge block; 806. Lower support wedge block; 807. Universal wheel support groove; 808. Limiting boss; 809. Pushing platform; 810. Guide clamping platform; 811. First return spring; 812. Guide angle plate; 9. Piston accumulator; 10. Precast surface; 11. Ground screw; 12. Pile body; 13. Pressure column. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0048] Please see Figure 1-12An eccentric motor-excited static pressure pile driving device includes a precast surface 10, a ground screw 11 embedded in the precast surface 10, a reaction frame 1 installed on the top of the precast surface 10, and a pile body 12. A hydraulic rod 2 is fixedly connected to the reaction frame 1, and an isolation plate 3 is slidably connected between the reaction frames 1. The working part of the hydraulic rod 2 is fixedly connected to the isolation plate 3.

[0049] An eccentric vibrator 4 is installed on the isolation plate 3, and a pile clamping device 5 is installed at the bottom of the isolation plate 3. The eccentric vibrator 4 is rigidly connected to the pile clamping device 5.

[0050] The pile clamping device 5 is used to clamp the pile body 12, and the eccentric vibrator 4 is used to generate excitation force.

[0051] The excitation force generated by the eccentric vibrator 4 acts on the soil layer through the pile body 12, destroying the soil structure, and under the static pressure assistance of the hydraulic rod 2 and the isolation plate 3, increases the sinking speed of the pile body 12.

[0052] During use, the eccentric vibrator 4 generates periodic excitation force, which is transmitted to the soil interface through the pile body 12, disrupting the soil structure and reducing frictional resistance. At the same time, the hydraulic rod 2 applies constant vertical pressure to the isolation plate 3, pushing the pile body 12 to sink. This works in synergy with the vibration to improve penetration efficiency. The two work synchronously, and the vibration causes the soil to temporarily liquefy or loosen. The constant vertical pressure provides residual resistance, thereby increasing the sinking speed of the pile body 12 and improving work efficiency.

[0053] The eccentric vibrator 4 includes a vibration table 401, on which multiple transmission shafts 402 are fixedly and through. The transmission shafts 402 pass through the isolation plate 3 downward and are fixedly connected to the clamp fixing plate 403. A pile clamping device 5 is provided between the clamp fixing plate 403 and the isolation plate 3.

[0054] The top of the excitation table 401 is symmetrically provided with an excitation chamber 408. The excitation chamber 408 is provided with two sets of eccentric wheels 405 with the same eccentric blocks. The eccentric wheels 405 are connected by a gear 406.

[0055] The gear 406 inside the symmetrically arranged excitation chamber 408 is synchronously connected by the transmission belt group 407.

[0056] One of the eccentric wheels 405 is connected to an external drive motor.

[0057] Furthermore, under the action of gear 406, the eccentric wheel 405 rotates, causing the isolation plate 3 on which the eccentric vibrator 4 is installed to sway left and right as the eccentric wheel rotates from bottom to top and from top to bottom. Therefore, through the two sets of eccentric wheels 405 driven by gear 406, the two sets of eccentric wheels 405 rotate in opposite directions, thereby counteracting the horizontal force when the eccentric wheel 405 is working.

[0058] In use, the eccentric wheel 405 inside the vibration chamber 408 drives the vibration table 401 to vibrate up and down, and the transmission shaft 402 drives the clamp fixing plate 403 and the pile clamping device 5 to vibrate up and down, thereby causing the pile body 12 held by the pile clamping device 5 to vibrate up and down. This allows the pile body 12 to transmit the vibration force to the soil layer and break the soil so that it liquefies or loosens, facilitating the transportation of the pile body 12.

[0059] Vibration damping springs 404 are sleeved on the outside of the transmission shaft 402 and between the excitation table 401, the clamp fixing plate 403 and the isolation plate 3. Multiple piston-type accumulators 9 are also provided between the clamp fixing plate 403 and the isolation plate 3.

[0060] Furthermore, the damping spring 404 is designed to reduce the vibration impact of the eccentric wheel 405 on the isolation plate 3 and the hydraulic rod 2 during operation.

[0061] Furthermore, the piston-type accumulator 9 further reduces vibration transmission.

[0062] In use, when the hydraulic rod 2 presses against the isolation plate 3 and applies downward pressure to the clamp fixing plate 403 through the damping spring 404 and the piston accumulator 9, and drives the pile body 12, which is fixedly connected to the pile clamping device 5, to apply force, the piston accumulator 9 and the damping spring 404 can transmit the force applied to the hydraulic rod 2, ensuring that the pile body 12 is pressed down stably. At the same time, the piston accumulator 9 and the damping spring 404 can also reduce the influence of the eccentric force generated by the eccentric vibrator 4 on the operation of the hydraulic rod 2.

[0063] The pile clamping device 5 includes a guide shell 501, a first clamping head 502, and a second clamping head 503. The first clamping head 502 and the second clamping head 503 are used to clamp the pile body 12. The second clamping head 503 is located on both sides of the first clamping head 502. The second clamping head 503 has the same structure as the first clamping head 502, but different size. The second clamping heads 503 are in pairs. A back plate 504 is fixedly connected to the side of the first clamping head 502 and the second clamping head 503 near the guide shell 501.

[0064] The first clamping head 502 and the second clamping head 503 include a guide wedge block 510, a pile clamping block 511, a small hydraulic cylinder 512, and a lower support platform 513. The guide wedge block 510 is fixedly connected to the lower support platform 513. The guide wedge block 510 and the lower support platform 513 are fixedly connected to the back plate 504. An inclined slope is provided on the side of the guide wedge block 510 away from the guide housing 501, and the pile clamping block 511 is slidably connected to the inclined slope. A small hydraulic cylinder 512 is provided on the side of the lower support platform 513 near the pile clamping block 511. The working part of the small hydraulic cylinder 512 is near the pile clamping block 511.

[0065] Furthermore, specific clamping plates can be installed on the side of the pile clamping block 511 on the first clamping head 502 and the second clamping head 503 near the pile body 12 to improve the clamping effect on different pile bodies 12.

[0066] In use, when the hydraulic rod 2 presses the pile body 12 downward, it drives the small hydraulic cylinder 512 to work, so that the small hydraulic cylinder 512 supports the pile body clamping block 511 along the guide wedge block 510 inclined surface one to clamp the outer wall of the pile body 12. The pile body clamping blocks 511 on multiple sides work simultaneously to achieve fixed clamping of the pile body 12, thereby ensuring that the hydraulic rod 2 can drive the pile body 12 to move downward.

[0067] When the hydraulic rod 2 lifts the isolation plate 3, the eccentric vibrator 4, and the pile clamping device 5, the small hydraulic cylinder 512 stops working. Due to the self-weight of the pile body 12 and the fact that part of the pile body 12 is already connected to the ground, the pile clamping block 511 slides down along the inclined surface of the guide wedge block 510 under the action of friction when it contacts the pile body 12. At this time, the pile clamping blocks 511 that are in contact with the pile body 12 are all disengaged from the pile body 12, thereby ensuring the stability of the hydraulic rod 2 moving upward and facilitating the subsequent pile driving of the pile body 12.

[0068] A guide drive assembly 1 505 is provided at the position of the guide housing 501 corresponding to the position of the first clamping head 502, and a guide drive assembly 2 506 is provided at the position of the guide housing 501 corresponding to the position of the second clamping head 503. The guide drive assembly 1 505 and the guide drive assembly 2 506 are composed of a guide shaft and a lead screw. The lead screw of the guide drive assembly 1 505 and the guide drive assembly 2 506 is threadedly connected to the side of the guide housing 501 near the first clamping head 502 and the second clamping head 503.

[0069] The number of guide drive groups 506 corresponds to the number of second gripping heads 503;

[0070] The guide shafts and lead screws of the first guide drive group 505 and the second guide drive group 506 pass through the guide housing 501 on the side near the first clamping head 502 and the second clamping head 503. The guide shaft and lead screw of the first guide drive group 505 are fixedly connected to the back plate 504 on the first clamping head 502, and the guide shaft and lead screw of the second guide drive group 506 are hinged to the back plate 504 on the second clamping head 503.

[0071] Furthermore, the guide shaft is used to guide the back plate 504, and the lead screw is used to control the displacement of the back plate 504.

[0072] Furthermore, a waist-shaped groove is provided at the hinge point where the guide drive assembly 2 506 is hinged to the back plate 504.

[0073] When driving a square pile, the screws on the first guide drive group 505 and the second guide drive group 506 are rotated to drive the first clamping head 502 and the second clamping head 503 to contact the outer surface of the square pile. The multi-sided pile clamping device 5 clamps the square pile simultaneously, thereby achieving the purpose of driving the square pile.

[0074] When driving a circular pile, first rotate the lead screw on the guide drive group 505 on each side of the pile clamping device 5 to pre-fix the circular pile. Then, gradually adjust the lead screw on the guide drive group 506 on each pile clamping device 5 so that the back plate 504 on the second clamping head 503 deflects as the lead screw of the guide drive group 506 rotates, thereby increasing the contact area with the circular pile and improving the clamping effect of the pile, which facilitates the driving of the circular pile.

[0075] The lead screws of guide drive group one 505 and guide drive group two 506 are connected to spline shafts 509 on the side away from the back plate 504. The spline shafts 509 are rotatably connected to the guide housing 501 and can be slidably connected to the lead screws of guide drive group one 505 and guide drive group two 506.

[0076] A second gear 507 is fixedly connected to the outside of the spline shaft 509 corresponding to the second guide drive group 506. The second gear 507 on the same side can rotate synchronously through the third gear 508. The third gear 508 is slidably connected to the guide housing 501. The third gear 508 can disengage from the meshing state with the second gear 507.

[0077] The splined shaft 509 has an internal hexagonal groove on its shaft center.

[0078] Furthermore, a positioning strip can be provided on the side of the guide housing 501 near the back plate 504. This is used to support the back plate 504 on the second clamping head 503, facilitating the leveling of the back plate 504 on the second clamping head 503 and facilitating the subsequent clamping of the square pile.

[0079] In use, the rotation of the lead screws on the first guide drive group 505 and the second guide drive group 506 is controlled by rotating the spline shaft 509.

[0080] Since the back plate 504 on the second clamping head 503 is simultaneously hinged to two sets of guide drive groups 506, when clamping the circular pile, the gear 3 508 is adjusted to make the gear 2 507 on the same side drive the transmission connection. This allows the back plate 504 on the second clamping head 503 to slide horizontally by turning the screw of one of the guide drive groups 506 on one side. When the back plate 504 on the second clamping head 503 contacts the outer surface of the circular pile, the gear 3 508 is adjusted to disengage from the gear 2 507, and then the screw of a single guide drive group 506 is adjusted to control the tilt angle of the back plate 504 on the second clamping head 503, thereby achieving a better clamping effect on the circular pile.

[0081] A horizontal positioner 7 is provided on the ground screw 11. The horizontal positioner 7 is used to level the machine. The horizontal positioner 7 includes a limiting threaded frustum 701, which is threaded to the outside of the ground screw 11. A reflective inclined surface 706 is provided on the top of the limiting threaded frustum 701. A light-transmitting ring 709 is sleeved on the outside of the reflective inclined surface 706. The adjacent surfaces of the reflective inclined surface 706 and the light-transmitting ring 709 are in contact. A light-shielding sleeve 702 is sleeved on the outside of the light-transmitting ring 709. A plurality of equidistant positioning holes 705 are provided on the light-shielding sleeve 702. A light-transmitting hole is provided on the limiting threaded frustum 701 at the position corresponding to the positioning hole 705, and a diffuser head 704 is installed in the hole.

[0082] Furthermore, the positioning hole 705 is a leveling hole used to receive the horizontal laser emitted by the level.

[0083] Furthermore, a reflective layer may be coated on the side of the conical surface of the light-transmitting ring 709 near the reflective slope 706.

[0084] Furthermore, the top of the 704 astigmatism head can be equipped with a multi-angle reflective surface to facilitate worker observation.

[0085] The top of the limiting threaded frustum 701 is fixedly connected to multiple bending clamping blocks 707, and there are gaps between the bending clamping blocks 707. The outer side of the bending clamping block 707 is threadedly connected to a positioning threaded sleeve 703. The top of the positioning threaded sleeve 703 is thickened, and the top of the positioning threaded sleeve 703 is inclined on the side near the bending clamping block 707. A rubber ring 708 is provided between the bending clamping block 707 and the ground screw 11.

[0086] The reaction frame 1 is placed on the support platform 6. The bottom of the support platform 6 is fixedly connected to the control device 8. The control device 8 includes a pile driver control device and a pile column control device. The pile driver control device includes a protective shell 801. A double-outlet hydraulic cylinder 802 is fixedly connected inside the protective shell 801. Horizontal control wedge blocks 805 are fixedly connected to both working parts of the double-outlet hydraulic cylinder 802. A universal wheel 803 is provided between the horizontal control wedge block 805 and the double-outlet hydraulic cylinder 802. The side of the universal wheel 803 away from the double-outlet hydraulic cylinder 802 is hinged to the protective shell 801. A second return spring 804 is provided on the universal wheel 803. The second return spring 804 pulls the universal wheel 803 to have a tendency to rotate towards the protective shell 801. A lower support wedge block 806 is provided on the bottom side of the horizontal control wedge block 805. A universal wheel support groove 807 is opened on the side of the lower support wedge block 806 near the universal wheel 803.

[0087] The bottom side of the horizontal adjustment wedge block 805 is provided with an inclined surface II, and a lower support wedge block 806 is slidably connected to the inclined surface II. The lower support wedge block 806 is provided with a limiting boss 808 on both sides near the double-outlet hydraulic cylinder 802. The protective shell 801 is provided with a limiting block at the position corresponding to the limiting boss 808. The middle part of the horizontal adjustment wedge block 805 and the lower support wedge block 806 is provided with a groove, which corresponds to the ground screw 11. The horizontal adjustment wedge block 805 is used to support the bottom side of the horizontal positioner 7.

[0088] In use, by controlling the working parts at both ends of the double-outlet hydraulic cylinder 802 to move toward the side closer to the double-outlet hydraulic cylinder 802, the horizontal adjustment wedge blocks 805 on both sides of the protective shell 801 move toward each other. When the universal wheel support groove 807 contacts the universal wheel 803, the universal wheel support groove 807 squeezes the universal wheel 803, causing the universal wheel 803 to flip downward and support the support platform 6 to move upward, thereby facilitating the movement of the pile driver.

[0089] By controlling the working parts at both ends of the double-outlet hydraulic cylinder 802 to move away from the double-outlet hydraulic cylinder 802, the intersection area between the universal wheel support groove 807 and the universal wheel 803 gradually decreases. At this time, under the operation of the return spring 804, the universal wheel 803 is gradually housed in the protective shell 801 to facilitate subsequent piling work.

[0090] After the caster wheel 803 is retracted into the protective housing 801 under the tension of the return spring 804, the working parts at both ends of the control double-outlet hydraulic cylinder 802 continue to move away from the double-outlet hydraulic cylinder 802. The horizontal adjustment wedge block 805 moves with the lower support wedge block 806 towards the outside of the protective housing 801 until the ground screw 11 is located in the middle of the horizontal adjustment wedge block 805 and the lower support wedge block 806. When the limiting boss 808 contacts the limiting block on the outside of the protective housing 801, with the continuous operation of the double-outlet hydraulic cylinder 802, the horizontal adjustment wedge block 805 moves upward under the guidance of the lower support wedge block 806 and fits against the bottom surface of the horizontal locator 7, thereby controlling the levelness of the support platform 6 and ensuring the stability of the pile body 12 installation.

[0091] The pile control device includes a guide angle plate 812. A guide clamping platform 810 is slidably connected to the side of the guide angle plate 812 near the pile body 12. The guide angle plate 812 applies a force away from the pile body 12 to the guide clamping platform 810 through a return spring 811. A pushing platform 809 is slidably connected up and down to the side of the guide angle plate 812 near the guide clamping platform 810. The contact surface between the pushing platform 809 and the guide clamping platform 810 is an inclined guide surface. A pressure column 13 is fixedly connected to the bottom of 005 at the position corresponding to the pushing platform 809.

[0092] Furthermore, the number of pile adjustment devices is at least three, used to push and limit the pile body 12 in at least three directions, thereby ensuring that the pile body 12 is vertical relative to the support platform 6.

[0093] Furthermore, the top or side of the pushing platform 809 may have threaded holes, and bolts may be threadedly connected to them. After the pushing platform 809 pushes the guide clamping platform 810 to guide the pile body 12, the bolts are rotated to make them contact the guide angle plate 812, thereby maintaining the position of the pushing platform 809 and facilitating the subsequent connection of the pile body 12 with the clamping device 5.

[0094] In use, when the protective shell 801 and the support platform 6 are adjusted to a horizontal state by the pile driver control device, the first pile body 12 is placed in the middle of the clamping device 5. Then, the clamping device 5 is moved down by driving the hydraulic rod 2. At this time, the pressure column 13 at the bottom of the clamping device 5 contacts the top of the pushing platform 809. Under the operation of the hydraulic rod 2, the pushing platform 809 is squeezed, and the pushing platform 809 causes the guide clamping platform 810 to move toward the pile body 12. Multiple pile driver control devices work simultaneously to achieve the adjustment of the vertical state of the pile body 12 relative to the support platform 6.

[0095] Working principle: A laser level is installed on the precast surface 10, and then the level positioner 7 is threaded onto each ground screw 11. Horizontal light is irradiated onto the surface of the ground screw 11. By slowly rotating the limiting threaded frustum 701, the laser light passes through the positioning hole 705 and is diffused outward by the diffuser head 704 under the refraction of the light transmission ring 709. When the worker observes this, the rubber ring 708 is squeezed by tightening the positioning threaded sleeve 703, so that the bending clamping block 707 hugs the ground screw 11, thereby fixing the relative position of the level positioner 7 and the ground screw 11.

[0096] Then move the pile driver to the working area and control the working parts at both ends of the double-outlet hydraulic cylinder 802 to move away from the double-outlet hydraulic cylinder 802. At this time, the intersection area between the universal wheel support groove 807 and the universal wheel 803 gradually decreases. At this time, under the operation of the return spring 804, the universal wheel 803 is gradually stored in the protective shell 801.

[0097] As the working parts at both ends of the double-rod hydraulic cylinder 802 continue to move away from the double-rod hydraulic cylinder 802, the horizontal adjustment wedge block 805 moves with the lower support wedge block 806 toward the outside of the protective housing 801. After the limiting boss 808 contacts the limiting block on the outside of the protective housing 801, as the double-rod hydraulic cylinder 802 continues to work, the horizontal adjustment wedge block 805 moves upward under the guidance of the lower support wedge block 806 and fits against the bottom surface of the limiting threaded frustum 701, thereby controlling the levelness of the support platform 6.

[0098] Then, the clamping device 5 is moved down by driving the hydraulic rod 2. At this time, the pressure column 13 at the bottom of the clamping device 5 contacts the top of the pushing table 809. Under the operation of the hydraulic rod 2, the pushing table 809 is squeezed, and the pushing table 809 causes the guide clamping table 810 to move toward the pile body 12. Multiple pile driver control devices work synchronously, so as to realize the adjustment of the vertical state of the pile body 12 relative to the support platform 6.

[0099] Then, by tightening the bolts and making them contact the surface of the guide angle plate 812, the positions of the pushing platform 809 and the guide clamping platform 810 are fixed. Then, the hydraulic rod 2 is driven to lift to the top of the pile body 12, and the pile body 12 is connected to the pile clamping device 5 manually.

[0100] Then, the eccentric wheel 405 inside the vibration chamber 408 drives the vibration table 401 to vibrate up and down, and the transmission shaft 402 drives the clamping plate 403 and the pile clamping device 5 to vibrate up and down. This causes the pile body 12 held by the pile clamping device 5 to vibrate up and down. The vibration is transmitted to the soil interface through the pile body 12, which destroys the soil structure and reduces the frictional resistance. At the same time, the hydraulic rod 2 applies a constant vertical pressure to the isolation plate 3, pushing the pile body 12 to sink. The vibration works in synergy to improve the penetration efficiency. The two work synchronously. The vibration causes the soil to temporarily liquefy or loosen. The constant vertical pressure leaves residual resistance, thereby increasing the sinking speed of the pile body 12 and improving the working efficiency.

[0101] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A static pressure pile sinking device of eccentric motor excitation type, comprising a pre-poured surface (10), a supporting table surface (6), a ground screw (11) pre-buried in the pre-poured surface (10), a counterforce frame (1) arranged on the top of the pre-poured surface (10), and a pile body (12), characterized in that: The counterforce frame (1) is fixedly connected with a hydraulic rod (2), and the counterforce frame (1) is slidably connected with an isolation plate (3); the working part of the hydraulic rod (2) is fixedly connected with the isolation plate (3); An eccentric exciter (4) is arranged on the isolation plate (3), and a pile body clamping device (5) is arranged at the bottom of the isolation plate (3); the eccentric exciter (4) is rigidly connected with the pile body clamping device (5); The pile body clamping device (5) is used for clamping a pile body (12), and the eccentric exciter (4) is used for generating an exciting force; The exciting force generated by the eccentric exciter (4) acts on the soil layer through the pile body (12), destroys the structure of the soil layer, and increases the sinking speed of the pile body (12) under the static pressure of the hydraulic rod (2) and the isolation plate (3); The counterforce frame (1) is arranged on a support table (6), and the bottom of the support table (6) is fixedly connected with a control device (8); the control device (8) comprises a pile driver control device and a pile column control device; the pile driver control device comprises a protective shell (801), the interior of the protective shell (801) is fixedly connected with a double-rod hydraulic cylinder (802), the two ends of the double-rod hydraulic cylinder (802) are fixedly connected with horizontal control wedge blocks (805), universal wheels (803) are arranged between the double-rod hydraulic cylinder (802) and the horizontal control wedge blocks (805), the side, away from the double-rod hydraulic cylinder (802), of the universal wheel (803) is hingedly connected with the protective shell (801), reset springs (804) are arranged on the universal wheel (803), the reset springs (804) pull the universal wheel (803) to have a movement tendency of rotating towards the interior of the protective shell (801), the bottom side of the horizontal control wedge block (805) is provided with a lower support wedge block (806), and a universal wheel support groove (807) is formed in the side, close to the universal wheel (803), of the lower support wedge block (806); The bottom side of the horizontal control wedge block (805) is provided with an inclined surface two, the lower support wedge block (806) is slidably connected with the inclined surface two, limit bosses (808) are arranged on the sides, close to the double-rod hydraulic cylinder (802), of the lower support wedge block (806), limit blocks are arranged on the protective shell (801) at positions corresponding to the limit bosses (808), recesses are formed in the middle portions of the horizontal control wedge block (805) and the lower support wedge block (806), the recesses correspond to ground screws (11), and the horizontal control wedge block (805) is used for supporting the bottom side of a horizontal positioner (7). The pile regulating device comprises a guide angle plate (812), a guide clamping table (810) is slidably connected to one side of the guide angle plate (812) close to the pile body (12), the guide angle plate (812) applies the force of the pile body (12) to the guide clamping table (810) through a reset spring (811), a pushing table (809) is slidably connected to one side of the guide clamping table (810) close to the guide angle plate (812), the interface between the pushing table (809) and the guide clamping table (810) is an inclined guide surface, and a pressure applying column (13) is fixedly connected to the bottom of the pile body clamping device (5) at a position corresponding to the pushing table (809).

2. The eccentric motor vibration type static pressure pile sinking device according to claim 1, characterized in that: The eccentric exciter (4) comprises an excitation table (401), a plurality of transmission shafts (402) are fixedly and penetratingly arranged on the excitation table (401), the transmission shafts (402) penetrate downward through the isolation plate (3) and are fixedly connected with a holder fixed plate (403), and the pile body clamping device (5) is arranged between the holder fixed plate (403) and the isolation plate (3). The top of the excitation table (401) is symmetrically provided with an excitation bin (408), the excitation bin (408) is provided with two eccentric blocks of eccentric wheels (405), and the eccentric wheels (405) are drivingly connected through gear one (406). The gear one (406) in the symmetrically arranged excitation bin (408) is synchronously drivingly connected through a transmission belt group (407). One of the eccentric wheels (405) is drivingly connected with an external driving motor.

3. The eccentric motor vibration type static pressure pile sinking device according to claim 2, characterized in that: The outside of the transmission shaft (402) and between the excitation table (401), the holder fixed plate (403) and the isolation plate (3) are all sleeved with damping springs (404), and a plurality of piston accumulators (9) are further arranged between the holder fixed plate (403) and the isolation plate (3).

4. The eccentric motor vibration type static pressure pile sinking device according to claim 1, characterized in that: The pile body clamping device (5) comprises a guide shell (501), a first clamping head (502) and a second clamping head (503), the first clamping head (502) and the second clamping head (503) are used for clamping the pile body (12), the second clamping head (503) is located on both sides of the first clamping head (502), the second clamping head (503) is the same in structure as the first clamping head (502) but different in size, the second clamping head (503) is arranged in pairs, and the first clamping head (502) and the second clamping head (503) are fixedly connected with a back plate (504) on one side close to the guide shell (501). The first clamping head (502), the second clamping head (503) include guide wedge (510), stake clamping block (511), small hydraulic cylinder (512), lower support table (513), the guide wedge (510) is fixedly connected with lower support table (513), the guide wedge (510), lower support table (513) are fixedly connected with backboard (504), the side away from guide housing (501) of guide wedge (510) is provided with inclined inclined plane one, and the stake clamping block (511) is arranged on the inclined inclined plane, the side of lower support table (513) close to stake clamping block (511) is provided with small hydraulic cylinder (512), and the working part of small hydraulic cylinder (512) is close to the side of stake clamping block (511).

5. The eccentric motor shock type static pressure pile sinking device according to claim 4, characterized in that: The guide housing (501) is provided with guide drive group one (505) at the position corresponding to the first clamping head (502), and the guide housing (501) is provided with guide drive group two (506) at the position corresponding to the second clamping head (503), the guide drive group one (505), guide drive group two (506) are composed of guide shaft and screw rod, the screw rod of guide drive group one (505), guide drive group two (506) is screw connected with the side of guide housing (501) close to backboard (504); The number of guide drive group two (506) corresponds to the number of second clamping head (503); The guide shaft and screw rod of guide drive group one (505), guide drive group two (506) are inserted through the side of guide housing (501) close to first clamping head (502), second clamping head (503), the guide shaft and screw rod of guide drive group one (505) are all fixedly connected with backboard (504) on first clamping head (502), and the guide shaft and screw rod of guide drive group two (506) are all hingedly connected with backboard (504) on second clamping head (503).

6. The eccentric motor shock type static pressure pile sinking device according to claim 5, characterized in that: The screw rod of guide drive group one (505), guide drive group two (506) is all connected with spline shaft (509) away from backboard (504), the spline shaft (509) is rotatably connected on guide housing (501), and the spline shaft (509) is drivingly and slidably connected on the screw rod of guide drive group one (505), guide drive group two (506); The spline shaft (509) outside corresponding to guide drive group two (506) is fixedly connected with gear two (507), and the gear two (507) on the same side can be synchronously rotated through gear three (508), the gear three (508) is slidably connected on guide housing (501), and the gear three (508) can be disengaged from the meshing state of gear two (507); The spline shaft (509) is provided with internal hexagonal groove in the shaft center.

7. The eccentric motor shock type static pressure pile sinking device according to claim 1, characterized in that: The ground screw (11) is provided with a horizontal positioner (7) for leveling the machine, the horizontal positioner (7) comprises a limiting screw round table (701) which is threadedly connected to the outer side of the ground screw (11), the top of the limiting screw round table (701) is provided with a light reflection inclined plane (706), the outer side of the light reflection inclined plane (706) is sleeved with a light transmission ring (709), the adjacent surface of the light reflection inclined plane (706) and the light transmission ring (709) is attached, the outer side of the light transmission ring (709) is sleeved with a light shielding sleeve (702), a plurality of equidistantly distributed positioning holes (705) are formed in the light shielding sleeve (702), a light transmission hole is formed in the position corresponding to the positioning hole (705) of the limiting screw round table (701), and a light dispersing head (704) is arranged in the hole.

8. The eccentric motor shock type static pressure pile sinking device according to claim 7, characterized in that: The top of the limiting screw round table (701) is fixedly connected with a plurality of bent clamping blocks (707), gaps exist between the bent clamping blocks (707), a positioning screw sleeve (703) is threadedly connected to the outer side of the bent clamping block (707), the top of the positioning screw sleeve (703) is thickened, one side of the top of the positioning screw sleeve (703) close to the bent clamping block (707) is obliquely arranged, and a rubber ring (708) is arranged between the bent clamping block (707) and the ground screw (11).

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