Impact pile driving mechanism and pile driver

Abstract

The present invention discloses an impact piling mechanism and a pile driver thereof, which belong to the field of engineering machinery. It mainly comprises a guide mechanism, a hydraulic cylinder and a clamping hammer head. A clamping hammer head which can move up and down along the guide mechanism is provided below the guide mechanism. A hydraulic cylinder is installed between the guide mechanism and the clamping hammer head. The hydraulic cylinder is connected to the guide mechanism, and the piston rod end of the hydraulic cylinder corresponds to the clamping hammer head. The present invention is easy to process, manufacture and assemble. During impact vibration, there is only vertical force but no horizontal force. The impact frequency and impact force are adjustable, and the use cost is low. The present invention is mainly used for piling.

Description

Technical Field

[0001] The present invention belongs to the field of engineering machinery, and in particular, relates to an impact piling mechanism and a piling machine thereof. Background Art

[0002] The pile driver based on crawler excavator uses the high-speed rotation of the hammer eccentric mechanism to generate periodic exciting force, thereby generating high-frequency vibration, and transmits the vibration to the pile body through the hammer clamping part. With the vibration generated, the soil structure around the pile changes due to the vibration, the soil around the pile body liquefies, the structure between soil particles becomes disordered, and the instantaneous strength decreases, causing the "fluidization" phenomenon of the soil structure. This reduces the friction between the pile and the soil, and then the pile is pressed into the soil by the combined force of the excavator's downward pressure, the pile driver and the pile's own weight.

[0003] The existing pile driving mechanism is a gear box structure, which contains two or more vibrating eccentric shafts. The vibrating eccentric shafts are installed in the gear box through bearings. The gear box contains gear oil, and the hydraulic motor drives the vibrating eccentric shaft to rotate at high speed to generate exciting force. The exciting force of the hammer head of this pile driving mechanism is related to the eccentricity of the vibrating eccentric mechanism and the rotation speed of the vibrating eccentric shaft. In order to ensure that the exciting force acts vertically on the hammer head and the pile during the pile driving process, two or more (even number) vibrating eccentric shafts are symmetrically arranged in the gear box, so that the exciting force generated by the vibrating eccentric shaft is superimposed to 0 in the horizontal direction and superimposed in the vertical direction.

[0004] In order to avoid the horizontal exciting force from causing horizontal disturbance to the hammer head and pile, and to prevent the pile from having poor verticality or causing horizontal disturbance and distortion of the surrounding piles during the piling process, the horizontal exciting force must be 0. This results in two or more (even number) vibration eccentric shafts being arranged symmetrically and having equal eccentricity. However, in actual production, due to manufacturing deviations, assembly deviations, etc., it is difficult to ensure that the vibration eccentric shaft is completely symmetrical and has equal eccentricity. The high-speed rotation of the vibration eccentric shaft has high requirements for bearing reliability and gearbox lubricating oil. At the same time, the exciting force generated by the vibration eccentric shaft is superimposed in the vertical direction, but the vertical exciting force is a periodic sine wave, the effective force of the exciting force changes periodically, and the equivalent force is lower than the maximum exciting force. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an impact piling mechanism and a pile driver thereof, which are easy to process, manufacture and assemble, have only vertical force but no horizontal force during impact vibration, and have adjustable impact frequency and impact force, and have low use cost.

[0006] The impact piling mechanism comprises a guide mechanism, a hydraulic cylinder and a clamping hammer. A clamping hammer which can move up and down along the guide mechanism is provided below the guide mechanism. A hydraulic cylinder is installed between the guide mechanism and the clamping hammer. The hydraulic cylinder is connected to the guide mechanism, and the piston rod end of the hydraulic cylinder corresponds to the clamping hammer.

[0007] Preferably, the guide mechanism comprises a guide plate, a sliding plate which can slide up and down is provided on the guide plate, guide blocks are provided at both ends of the sliding plate, a sliding groove which cooperates with the guide blocks is provided on the guide plate, and the cylinder body of the hydraulic cylinder is fixedly connected to the sliding plate.

[0008] Preferably, the clamping hammer head includes an upper support box and a hammer head body which are fixedly connected, the upper support box is fixedly connected to the guide plate, the hammer head body is fixedly connected to the clamping plate, pressure plates are respectively provided on the hammer head body and the clamping plate, a clamping hydraulic cylinder is provided between the hammer head body and the clamping plate, the telescopic rod of the clamping hydraulic cylinder is connected to the pressure plate on the clamping plate side, and the other end of the clamping hydraulic cylinder is hinged to the clamping plate.

[0009] Preferably, the guide mechanism includes a fixed box and a mounting plate, the top of the fixed box is connected to the mounting plate, the bottom of the fixed box is movably connected to the clamping hammer head through a guide slot, the hydraulic cylinder is placed in the fixed box, and the cylinder body of the hydraulic cylinder is connected to the mounting plate.

[0010] Preferably, the clamping hammer includes a hammer body and a clamping plate that are fixedly connected, and pressure plates are respectively provided on the hammer body and the clamping plate. A clamping hydraulic cylinder is provided between the hammer body and the clamping plate, and the telescopic rod of the clamping hydraulic cylinder is connected to the pressure plate on the clamping plate side. The other end of the clamping hydraulic cylinder is hinged to the clamping plate, and a guide slider that cooperates with the guide slide groove is provided on the hammer body, an impact groove is provided on the hammer body, and an impact block that cooperates with the impact groove is provided at the piston rod end of the hydraulic cylinder.

[0011] Preferably, it also includes a hanger and a fixed plate, the guide mechanism is connected to the fixed plate through a shock absorber and a fastener, a pin shaft and a limit block 2 are respectively provided on both sides of the fixed plate, two slide grooves cooperating with the pin shaft are provided on both sides of the hanger, and a limit groove cooperating with the limit block 2 is provided on the inner side of the hanger.

[0012] Preferably, a rotatable support frame is provided above the hanger, a driving motor is installed on the support frame, a gear is provided on the output shaft of the driving motor, a fixedly connected rotating gear ring is provided on the hanger, and the gear is meshed with the rotating gear ring.

[0013] Preferably, a swivel joint is provided between the support frame and the hanger, one end of the swivel joint is connected to the support frame, and the other end is connected to the hanger, and a valve is installed on the hanger, and the valve is respectively connected to the swivel joint and the hydraulic cylinder.

[0014] The pile driver comprises a pile driver body, a big arm, a middle arm and a small arm. The upper frame of the pile driver body is hinged to the big arm, the two ends of the middle arm are respectively hinged to the big arm and one end of the small arm, and the other end of the small arm is provided with the above-mentioned impact piling mechanism.

[0015] Preferably, the forearm is connected to the support frame, a first oil cylinder is provided between the upper frame of the pile driver body and the upper arm, a second oil cylinder is provided between the upper arm and the middle arm, and a third oil cylinder is provided between the middle arm and the forearm.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention utilizes the alternating switching of the hydraulic oil at the piston end and the rod end of the hydraulic cylinder to realize the alternating hydraulic force of the hydraulic cylinder, thereby driving the hammer head and the pile to form a certain frequency of vibration. By adjusting and controlling the switching frequency of the oil at the piston end and the rod end of the hydraulic cylinder and the pressure setting of the hydraulic system of the whole machine, the impact frequency and impact force are adjustable, eliminating the gear box structure in the prior art, that is, the method of realizing vibration impact by driving the high-speed rotation of two or more (even number) symmetrical eccentric shafts through motor drive;

[0018] 2. The impact vibration of the present invention has only vertical force but no horizontal force, thus avoiding horizontal vibration of the hammer head and the pile, and avoiding the influence of the horizontal force on the verticality during the piling process, making it easier to ensure the verticality during the piling process and reducing the loss of adjacent piles;

[0019] 3. The present invention is easy to process and assemble. It does not need to generate exciting force through high-speed rotation of the vibrating eccentric shaft, thereby avoiding increasing the process difficulty to reduce the manufacturing and assembly deviation of two or more (even number) vibrating eccentric shafts in order to reduce the exciting force in the horizontal direction. At the same time, it does not need high-speed rotation and high-speed vibration bearings and gear oil, thereby reducing maintenance costs and daily use costs;

[0020] 4. The present invention changes the oil pressure supplied by the hydraulic cylinder, changes the cylinder force, and then changes the exciting force, thereby achieving independent control of the exciting force and frequency decoupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention when piling is pressed downward;

[0023] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present invention during pile pulling and lifting;

[0024] Figure 4 is a schematic diagram of the structure of the sliding plate;

[0025] Figure 5 This is a schematic diagram of the structure of the clamping hammer head of the second embodiment;

[0026] Figure 6 This is a schematic diagram of the structure of Embodiment 4 of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the fourth embodiment of the present invention when piling is pressed downward;

[0028] Figure 8 This is a schematic diagram of the structure of the pile pulling and lifting of the fourth embodiment of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of a pile driver of the present invention.

[0030] In the figure, 1, driving motor; 101, gear; 2, support frame; 3, valve; 4, fixing plate; 401, limit block 2; 402, convex block; 403, pin shaft; 5, hydraulic cylinder; 6, shock absorber; 7, guide mechanism; 701, sliding plate; 702, guide block; 703, guide plate; 704, mounting plate; 705, fixing box; 706, guide slide; 8, clamping hammer; 801, upper support box; 802, rib plate; 803 , clamping hydraulic cylinder; 804, pressure plate; 805, hammer body; 806, clamping plate; 807, guide slide block; 808, impact groove; 809, limit block one; 9, hanger; 901, limit groove; 902, slide groove two; 904, slewing gear ring; 10, slewing joint; 11, pile; 12, pile driver body; 13, first cylinder; 14, upper arm; 15, second cylinder; 16, middle arm; 17, third cylinder; 18, forearm. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0032] Embodiment 1: Figure 1 As shown, the impact piling mechanism includes a guide mechanism 7, a hydraulic cylinder 5 and a clamping hammer 8. A clamping hammer 8 that can move up and down along the guide mechanism 7 is provided below the guide mechanism 7. A hydraulic cylinder 5 is installed between the guide mechanism 7 and the clamping hammer 8. The hydraulic cylinder 5 is connected to the guide mechanism 7, and the piston rod end of the hydraulic cylinder 5 corresponds to the clamping hammer 8.

[0033] like Figures 2 to 4 As shown, the guide mechanism 7 includes a guide plate 703 and a sliding plate 701. Guide blocks 702 are provided at both ends of the sliding plate 701. The guide plate 703 is provided with a sliding groove that cooperates with the guide block 702. The sliding plate 701 can slide up and down along the guide plate 703. The cylinder body of the hydraulic cylinder 5 is fixedly connected to the sliding plate 701. Under the action of the guide block 702, the hydraulic cylinder 5 slides up and down along the sliding groove of the guide plate 7.

[0034] like Figure 5 As shown, the clamping hammer 8 includes an upper support box 801 and a hammer body 805 that are fixedly connected. The upper support box 801 is fixedly connected to the guide plate 703 by fasteners. A rib plate 802 is provided on the upper support box 801. The rib plate 802 can improve the structural strength of the upper support box 801. The hammer body 805 is fixedly connected to the clamping plate 806. A gap is provided between the hammer body 805 and the clamping plate 806. Pressure plates 804 are provided on the hammer body 805 and the clamping plate 806, respectively. A clamping hydraulic cylinder 803 is provided between the hammer body 805 and the clamping plate 806. The telescopic rod of the clamping hydraulic cylinder 803 is connected to the pressure plate 804 on the side of the clamping plate 806, and the other end of the clamping hydraulic cylinder 803 is hinged to the clamping plate 806. During operation, the pile 11 is placed between the two pressing plates 804 . Under the telescopic action of the clamping hydraulic cylinder 803 , the pressing plate 804 on the clamping plate 806 clamps the pile 11 by pressing against the pressing plate 804 on the hammer body 805 .

[0035] Embodiment 2: It also includes a hanger 9 and a fixed plate 4. The guide mechanism 7 is connected to the fixed plate 4 through a shock absorber 6 and a fastener. During installation, a plurality of shock absorbers 6 are installed on the sliding plate 701. The sliding plate 701 is fixedly connected to the fixed plate 4 through the shock absorber 6 and bolts. The fixed plate 4, the shock absorber 6 and the hydraulic cylinder 5 are placed in the upper support box 801 on the clamping hammer head 8. The fixed plate 4 is provided with a pin 403 and a second limit block 401 on both sides. The hanger 9 is provided with a second slide groove 902 that cooperates with the pin 403 on both sides. The inner side of the hanger 9 is provided with a second limit block The fixing plate 4 is placed in the second slide groove 902 on the hanger 9 through the pin shafts 403 at both ends, and the limit blocks 401 at both ends of the fixing plate 4 limit the swing of the fixing plate 4 and the hanger 9 around the pin shaft 403 when the pile is pressed down, thereby ensuring that the fixing plate 4, the hydraulic cylinder 5 and the guide mechanism 7, the clamping hammer 8 and the pile 11 remain vertical with the hanger 9 during the piling process. During the piling process, the verticality of the pile 11 can be ensured by adjusting the big arm 14, the middle arm 16 and the small arm 18 of the pile driver to ensure the verticality of the hanger 9.

[0036] The fixing plate 4 is provided with a protrusion 402, which limits the swing amplitude of the hanger 9. The fixing plate 4 drives the guide mechanism 7, the clamping hammer 8 and the hydraulic cylinder 10 to swing around the slide groove 902 in the hanger 9 and slide up and down a certain amplitude through the shock absorber 6.

[0037] A rotatable support frame 2 is provided above the hanger 9, and a driving motor 1 is installed on the support frame 2. The output shaft of the driving motor 1 is provided with a gear 101, and a fixedly connected rotating ring gear 904 is provided on the hanger 9, and the gear 101 is meshed with the rotating ring gear 904; the hydraulic oil drives the gear 101 of the output shaft of the driving motor 1 to rotate, thereby rotating the rotating ring gear 904 on the meshing hanger 9, thereby driving the hanger 9 and the support frame 2 to rotate relative to each other, thereby driving the hydraulic cylinder 5, the guide mechanism 7 and the clamping hammer 8 to rotate through the fixed plate 4 and the shock absorber 6, so as to realize the adjustment of the rotation angle of the clamping hammer 8, so as to facilitate the angle adjustment of the clamping hammer 8 and the pile 11 during the process of picking up piles, hanging piles and piling, and facilitate the operation and construction.

[0038] A swivel joint 10 is provided between the support frame 2 and the hanger 9. One end of the swivel joint 10 is connected to the support frame 2, and the other end is connected to the hanger 9. A valve 3 is installed on the hanger 9, and the valve 3 is connected to the swivel joint 10 and the hydraulic cylinder 10 respectively; the rest is the same as the first embodiment. The swivel joint 10 realizes the distribution of the oil circuit to the valve 3 during the rotation of the hanger 9 to avoid the entanglement of the pipeline. The valve 3 provides high-pressure hydraulic oil switching to the piston end and the piston rod end of the hydraulic cylinder 5 to realize the extension and retraction of the piston rod of the hydraulic cylinder 5, thereby impacting the clamping hammer 8 and the pile 11 to form a vibration impact.

[0039] like Fig. 9 As shown, the pile driver includes a pile driver body 12, a boom 14, a middle arm 16 and a small arm 18. The upper frame of the pile driver body 12 is hinged to the boom 14, and the two ends of the middle arm 16 are respectively hinged to the boom 14 and one end of the small arm 18. A first oil cylinder 13 is provided between the upper frame of the pile driver body 12 and the boom 14, a second oil cylinder 15 is provided between the boom 14 and the middle arm 16, and a third oil cylinder 17 is provided between the middle arm 16 and the small arm 18. The other end of the small arm 18 is provided with the above-mentioned impact piling mechanism, and the small arm 18 is connected to the support frame 2.

[0040] In this embodiment, when the pile is pressed down, the clamping hammer 8 and the pile 11 make the lower end of the slide groove of the clamping hammer 8 and the guide plate 703 act on the guide blocks 702 at both ends of the hydraulic cylinder 5 under the side resistance and end resistance of the pile, and are placed on the upper end of the slide groove 902 of the hanger 9 through the hydraulic cylinder 5, the shock absorber 6, and the guide plate 703; the valve 3 provides high-pressure hydraulic oil switching to the two ends of the hydraulic cylinder 5 to realize the extension and retraction of the piston rod of the hydraulic cylinder 5, and then impact the clamping hammer 8 and the pile 11, forming a vibration impact, and the clamping hammer 8 and the pile 11 under the impact force make the slide groove of the guide plate 703 move downward along the guide blocks 702 at both ends of the hydraulic cylinder 5, and the piston rod of the hydraulic cylinder 5 impacts the top of the hammer body 805, and when the oil at both ends of the hydraulic cylinder 5 is switched, the piston rod moves upward, but the amplitude of the upward movement is smaller than the top of the upper support box 801 on the hydraulic cylinder 5 and the clamping hammer 8, and it does not form an impact contact with the upper support box 801 of the clamping hammer 8. At the same time, the whole machine working device applies a certain pressure to the pile 11 through the support frame 2, the hanger 9, the fixing plate 4, the shock absorber 6, the guide mechanism 7 and the clamping hammer head 8, so as to achieve piling.

[0041] At the same time, the guide plate 703 and the shock absorber 6 place the fixed plate 4 in the upper limit position in the second slide groove 902 on the hanger 9, and the hanger 9 cooperates with the second limit block 401 on the fixed plate 4 through the limit groove 901, thereby limiting the swing of the fixed plate 4 and the hanger 9, so that the fixed plate 4 can only slide along the second slide groove 902 on the hanger 9 and cannot swing, thereby ensuring that the support frame 2, hanger 9, fixed plate 4, guide plate 703, clamping hammer head 8 and pile 11 can only move vertically in the up and down directions during piling, ensuring the verticality during piling; at the same time, the interaction between the protrusion 402 on the fixed plate 4 and the hanger 9 can also assist in limiting the swing.

[0042] When the pile is pulled out and lifted, the clamping hammer 8 and the pile 11 are placed at the upper limit position of the slide groove of the guide plate 703 under the side resistance of the pile. At the same time, the guide blocks 702 at both ends of the hydraulic cylinder 5 are used to place the hydraulic cylinder 5, the shock absorber 6, and the fixing plate 4 at the lower limit end of the slide groove 902 of the hanger 9; the valve 3 provides high-pressure hydraulic oil switching to the two ends of the hydraulic cylinder 5 to realize the extension and retraction of the piston rod of the hydraulic cylinder 5, and then impact the clamping hammer 8 and the pile 11 to form a vibration impact. During the impact process, because the guide blocks 702 at both ends of the hydraulic cylinder 5 are at the upper limit position of the slide groove of the guide plate 703, the piston rod of the hydraulic cylinder 5 impacts the upper end of the upper support box 801 of the clamping hammer 8, and when the oil at both ends of the hydraulic cylinder 5 is switched, the piston rod moves downward, but the amplitude of the downward movement is less than the distance between the hydraulic cylinder 5 and the upper support box 801, so that the clamping hammer 8 does not form an impact contact. At the same time, the whole machine working device applies a certain pulling force to the pile 11 through the support frame 2, the hanger 9, the fixing plate 4, the shock absorber 6, the guide plate 703 and the clamping hammer head 8, thereby realizing pile pulling.

[0043] The present invention changes the oil supply switching frequency of the valve 3 to the two ends of the hydraulic cylinder 5, thereby controlling the frequency of the extension and retraction of the piston rod of the hydraulic cylinder 5, thereby changing the vibration frequency of the impact clamping hammer 8 and the pile 11; by controlling the oil supply pressure of the supply valve 3 and the hydraulic cylinder 5, thereby controlling the oil pressure of the working oil of the hydraulic cylinder 5, thereby changing the output force of the hydraulic cylinder 5, and further changing the vibration force of the impact clamping hammer 8 and the pile.

[0044] Embodiment 3: Figures 6 to 8 As shown, the guide mechanism 7 includes a fixed box 705 and a mounting plate 704. The upper part of the fixed box 705 is connected to the mounting plate 704. The lower part of the fixed box 705 is movably connected to the clamping hammer 8 through a guide slide groove 706. The hydraulic cylinder 5 is placed in the fixed box 705, and the cylinder body of the hydraulic cylinder 5 is connected to the mounting plate 704. The clamping hammer 8 includes a hammer body 805 and a clamping plate 806 that are fixedly connected. There is a gap between the hammer body 805 and the clamping plate 806. A limit block 809 is provided on the hammer body 805. The function of the limit block 809 is to block the impact groove 808 after the impact block 51 is assembled, so as to prevent foreign matter from entering. On the other hand, even if the impact block 51 is damaged, it can be prevented from falling out of the impact groove 808. A clamping hydraulic cylinder 803 is provided between the hammer body 805 and the clamping plate 806. A pressure plate 804 is provided on the hammer body 805 and the clamping plate 806 respectively. A guide slider 807 cooperating with the guide groove 706 is provided on the hammer body 805. An impact groove 808 is provided on the hammer body 805. An impact block 51 cooperating with the impact groove 808 is provided at the piston rod end of the hydraulic cylinder 5. The clamping hammer 8 can only move up and down in the guide groove 706 of the fixed box 705 through the guide slider 807; the rest is the same as the first embodiment.

[0045] Embodiment 4: It also includes a hanger 9 and a fixing plate 4. The guide mechanism 7 is connected to the fixing plate 4 through the shock absorber 6 and fasteners. During installation, the mounting plate 704 is fixedly connected to the fixing plate 4 through the shock absorber 6 and bolts. The rest is the same as Embodiment 2.

[0046] The pile driver comprises a pile driver body 12, a boom 14, a middle arm 16 and a small arm 18. The upper frame of the pile driver body 12 is hinged to the boom 14, the two ends of the middle arm 16 are respectively hinged to the boom 14 and one end of the small arm 18, and the other end of the small arm 18 is provided with the impact piling mechanism described in the fourth embodiment.

[0047] like Figure 7As shown, in this embodiment, when piling, the clamping hammer 8 and the pile 11 are placed at the upper limit of the guide slot 706 of the fixed box 705 under the pile side resistance and end resistance, and the fixed box 705 is placed at the upper limit in the slot 2 902 on the hanger 9 through the mounting plate 704, the shock absorber 6 and the fixing plate 4; the valve 3 provides high-pressure hydraulic oil switching to the two ends of the hydraulic cylinder 5 to realize the extension and retraction of the piston rod of the hydraulic cylinder 5, driving the impact block 51 to impact the lower end surface of the impact slot 808 in the clamping hammer 8, forming a vibration impact on the clamping hammer 8 and the pile 11, and the clamping hammer 8 and the pile 11 move downward along the guide slot 706 at the two ends of the fixed box 705 under the impact force; and when the oil at the two ends of the hydraulic cylinder 5 is switched, the piston rod moves upward, but the amplitude of the upward movement is less than the distance between the hydraulic cylinder 5 and the upper surface of the guide slot 706 on the clamping hammer 8, and no impact contact is formed with the upper surface of the guide slot 706 of the clamping hammer 8. At the same time, the whole machine working device applies a certain pressure to the pile 11 through the support frame 2, the hanger 9, the fixing plate 4, the shock absorber 6, the mounting plate 704, the fixing box 705 and the clamping hammer head 8, thereby achieving piling.

[0048] When the pile is pulled out and lifted, the principle is the same as that of pile driving. The clamping hammer 8 and the pile 11 are at the lower limit position of the guide slide groove 706 of the fixed box 705 under the side resistance of the pile. At the same time, the fixed plate 4 is placed at the lower limit position in the slide groove 2 902 on the hanger 9. The valve 3 provides high-pressure hydraulic oil switching to the two ends of the hydraulic cylinder 5 to realize the extension and retraction of the piston rod of the hydraulic cylinder 5, driving the impact block 51 to impact the upper end surface of the impact groove 808 in the clamping hammer 8, forming a vibration impact on the clamping hammer 8 and the pile 11. Under the action of the impact force, the clamping hammer 8 and the pile 11 move upward along the guide slide grooves 706 at both ends of the fixed box 705; when the oil at both ends of the hydraulic cylinder 5 is switched, the piston rod moves downward but the impact block 51 does not contact the lower end surface of the impact groove 808. At the same time, the whole machine working device applies a certain pulling force to the pile 11 through the support frame 2, the hanger 9, the fixing plate 4, the shock absorber 6, the mounting plate 704, the fixing box 705 and the clamping hammer 8, thereby achieving pile extraction.

Claims

1. An impact piling mechanism, characterized in that: It comprises a guide mechanism (7), a hydraulic cylinder (5) and a clamping hammer (8); a clamping hammer (8) is provided below the guide mechanism (7) and can move up and down along the guide mechanism (7); a hydraulic cylinder (5) is installed between the guide mechanism (7) and the clamping hammer (8); the hydraulic cylinder (5) is connected to the guide mechanism (7); and a piston rod end of the hydraulic cylinder (5) corresponds to the clamping hammer (8); It also includes a hanger (9) and a fixed plate (4), wherein the guide mechanism (7) is connected to the fixed plate (4) via a shock absorber (6) and a fastener, a pin shaft (403) and a second limit block (401) are respectively provided on both sides of the fixed plate (4), a second slide groove (902) cooperating with the pin shaft (403) is provided on both sides of the hanger (9), a limit groove (901) cooperating with the second limit block (401) is provided on the inner side of the hanger (9), and a protrusion (402) is provided on the fixed plate (4), and the protrusion (402) on the fixed plate (4) limits the swing amplitude of the hanger (9); The guide mechanism (7) comprises a guide plate (703), a sliding plate (701) which can slide up and down is provided on the guide plate (703), guide blocks (702) are provided at both ends of the sliding plate (701), a sliding groove which cooperates with the guide blocks (702) is provided on the guide plate (703), and a cylinder body of the hydraulic cylinder (5) is fixedly connected to the sliding plate (701); The clamping hammer (8) comprises an upper support box (801) and a hammer body (805) which are fixedly connected. The upper support box (801) is fixedly connected to the guide plate (703). The hammer body (805) is fixedly connected to the clamping plate (806). A pressing plate (804) is provided on the hammer body (805) and the clamping plate (806) respectively. A clamping hydraulic cylinder (803) is provided between the hammer body (805) and the clamping plate (806). The telescopic rod of the clamping hydraulic cylinder (803) is connected to the pressing plate (804) on the side of the clamping plate (806). The other end of the clamping hydraulic cylinder (803) is hinged to the clamping plate (806).

2. An impact piling mechanism, characterized in that: It comprises a guide mechanism (7), a hydraulic cylinder (5) and a clamping hammer (8); a clamping hammer (8) is provided below the guide mechanism (7) and can move up and down along the guide mechanism (7); a hydraulic cylinder (5) is installed between the guide mechanism (7) and the clamping hammer (8); the hydraulic cylinder (5) is connected to the guide mechanism (7); and a piston rod end of the hydraulic cylinder (5) corresponds to the clamping hammer (8); It also includes a hanger (9) and a fixed plate (4), wherein the guide mechanism (7) is connected to the fixed plate (4) via a shock absorber (6) and a fastener, a pin shaft (403) and a second limit block (401) are respectively provided on both sides of the fixed plate (4), a second slide groove (902) cooperating with the pin shaft (403) is provided on both sides of the hanger (9), a limit groove (901) cooperating with the second limit block (401) is provided on the inner side of the hanger (9), and a protrusion (402) is provided on the fixed plate (4), and the protrusion (402) on the fixed plate (4) limits the swing amplitude of the hanger (9); The guide mechanism (7) comprises a fixed box (705) and a mounting plate (704); the upper portion of the fixed box (705) is connected to the mounting plate (704); the lower portion of the fixed box (705) is movably connected to the clamping hammer head (8) via a guide slide groove (706); the hydraulic cylinder (5) is placed in the fixed box (705); and the cylinder body of the hydraulic cylinder (5) is connected to the mounting plate (704); The clamping hammer (8) comprises a hammer body (805) and a clamping plate (806) which are fixedly connected, the hammer body (805) and the clamping plate (806) are respectively provided with a pressure plate (804), a clamping hydraulic cylinder (803) is provided between the hammer body (805) and the clamping plate (806), a telescopic rod of the clamping hydraulic cylinder (803) is connected to the pressure plate (804) on the side of the clamping plate (806), the other end of the clamping hydraulic cylinder (803) is hinged to the clamping plate (806), the hammer body (805) is provided with a guide slide block (807) which cooperates with the guide slide groove (706), the hammer body (805) is provided with an impact groove (808), and the piston rod end of the hydraulic cylinder (5) is provided with an impact block (51) which cooperates with the impact groove (808).

3. The impact piling mechanism according to claim 1 or 2, characterized in that: A rotatable support frame (2) is provided above the hanger (9), a drive motor (1) is mounted on the support frame (2), an output shaft of the drive motor (1) is provided with a gear (101), a fixedly connected rotating ring gear (904) is provided on the hanger (9), and the gear (101) meshes with the rotating ring gear (904).

4. The impact piling mechanism according to claim 3, characterized in that: A swivel joint (10) is provided between the support frame (2) and the hanger (9); one end of the swivel joint (10) is connected to the support frame (2), and the other end is connected to the hanger (9); a valve (3) is installed on the hanger (9); the valve (3) is respectively connected to the swivel joint (10) and the hydraulic cylinder (5).

5. A pile driver, comprising a pile driver body (12), a big arm (14), a middle arm (16) and a small arm (18), wherein the upper frame of the pile driver body (12) is hinged to the big arm (14), and the two ends of the middle arm (16) are respectively hinged to one end of the big arm (14) and the small arm (18), characterized in that: The other end of the small arm (18) is provided with the impact piling mechanism according to claim 4.

6. The pile driver according to claim 5, characterized in that: The forearm (18) is connected to the support frame (2); a first oil cylinder (13) is provided between the upper frame of the pile driver body (12) and the upper arm (14); a second oil cylinder (15) is provided between the upper arm (14) and the middle arm (16); and a third oil cylinder (17) is provided between the middle arm (16) and the forearm (18).

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