Adjustable hydraulic pile hammer for oblique pile driving

Abstract

The invention discloses an adjustable hydraulic pile hammer for oblique pile driving, and belongs to the technical field of hydraulic pile hammers. The pile pressing mechanism is arranged in the multi-degree-of-freedom platform, the pile pressing mechanism is connected to an upper supporting plate of the multi-degree-of-freedom platform, and a pile inlet hole is formed in the upper supporting plate; a pile hammering mechanism; the pile driving direction is accurately adjusted in multiple directions through the multi-degree-of-freedom platform, the pile driving point position can be quickly found without moving the whole pile driver, the pile driving angle compensation adjusting device is suitable for pile driving angle compensation adjusting of complex terrains, a stopping platform is provided for the pile driver without leveling a foundation, unnecessary construction is saved, the pile driving efficiency is improved, and the pile driving cost is reduced. The pile pressing mechanism is used for oblique piling during soft soil operation, when the pile pressing mechanism encounters hard rocks, the pile hammering mechanism is pushed to the pile entering hole through the first hydraulic cylinder, hammering piling can be conducted, the piling continuity is guaranteed, and the using flexibility and universality of the whole device are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic pile hammers, and particularly relates to an adjustable hydraulic pile hammer for inclined pile driving. Background Art

[0002] In engineering construction, inclined pile driving means driving the pile body into the foundation at a certain inclination angle, which is mainly used to meet special stress requirements or adapt to complex engineering environments, and is applied in wharves, port engineering, retaining walls, foundation pit support, bridge piers and high tower foundation construction.

[0003] A hydraulic pile hammer is a device used for pile foundation construction, which is divided into a hydraulic impact pile hammer and a hydraulic vibration pile hammer. The hydraulic impact pile hammer needs to be mounted on a pile driver when driving inclined piles. However, the pile driver is large in size and inconvenient to move on the construction site, making it not easy to carry out rapid inclined pile driving operations.

[0004] Chinese Patent (CN202120977672.3) discloses a fixed inclined pile static pile press, which includes a main machine platform, a hydraulic pile pressing mechanism, an inclined support rod, four middle pile connecting seats, a hoisting mechanism, a transverse moving mechanism, and a longitudinal moving mechanism. The main machine platform is provided with a middle pile press well, and the four middle pile connecting seats are respectively arranged on the left and right sides or the front and back sides of the middle pile press well. The lower end of the hydraulic pile pressing mechanism is installed on the four middle pile connecting seats, and the pile feeding direction of the hydraulic pile pressing mechanism is inclined to the vertical central axis of the main machine platform. The upper and lower ends of the inclined support rod are respectively connected to the hydraulic pile pressing mechanism and the main machine platform.

[0005] At present, although the inclined pile static pile press can quickly adjust the pile driving angle and has a higher pile driving efficiency compared with the hydraulic impact pile hammer, it needs to accurately move and adjust the position of the pile driver. When encountering a complex construction terrain, it is necessary to level the foundation to provide a docking platform for the pile driver, wasting the time of pile driving operations. The static pile pressing operation is usually applicable to construction in soft soil areas. Once hard rock is encountered during the construction process, the pile driving will fail and stop, resulting in limitations in inclined pile construction. Summary of the Invention

[0006] The purpose of the present invention is to propose an adjustable hydraulic pile hammer for inclined pile driving in order to solve the above-mentioned existing problems.

[0007] To achieve the above purpose, the present invention adopts the following technical solution: An adjustable hydraulic pile hammer for inclined pile driving, which includes:

[0008] A multi-degree-of-freedom platform;

[0009] A pile pressing mechanism, which is arranged in the multi-degree-of-freedom platform, and the pile pressing mechanism is connected to the upper support plate of the multi-degree-of-freedom platform. An inlet pile hole is provided on the upper support plate;

[0010] A pile hammering mechanism, which is connected to the top of the upper support plate through two slide rails;

[0011] A first hydraulic cylinder, which is fixedly connected to the top of the upper support plate, and the first hydraulic cylinder is connected to and drives the pile hammering mechanism.

[0012] As a further description of the above technical solution:

[0013] The multi-degree-of-freedom platform is a six-degree-of-freedom hydraulic platform.

[0014] As a further description of the above technical solution:

[0015] The pile pressing mechanism includes a flange pipe, a plurality of sliders, a plurality of second hydraulic cylinders and a plurality of third hydraulic cylinders. The flange pipe is fixedly connected to the upper support plate, and the axis of the flange pipe coincides with the axis of the pile insertion hole. The plurality of sliders are arranged in a circular array, and the plurality of sliders are slidably connected in the flange pipe. The plurality of second hydraulic cylinders are fixedly connected to the ends of the flange pipe, and the plurality of second hydraulic cylinders are respectively connected to and drive the plurality of sliders. The plurality of third hydraulic cylinders are respectively connected to the plurality of sliders, and a support block is hinged to the telescopic end of the third hydraulic cylinder.

[0016] As a further description of the above technical solution:

[0017] A plurality of chutes are formed in the flange pipe, a plurality of guide posts are arranged in the chutes, and the plurality of sliders are respectively arranged in the plurality of chutes, and the sliders are slidably connected to the plurality of guide posts.

[0018] As a further description of the above technical solution:

[0019] The axes of the guide posts, the axes of the second hydraulic cylinders and the axis of the flange pipe are parallel to each other, and the axis of the third hydraulic cylinder is perpendicular to the axis of the second hydraulic cylinder.

[0020] As a further description of the above technical solution:

[0021] The pile hammering mechanism includes a support ring, a guide and slide frame and a hydraulic vibratory hammer. The support ring is slidably connected to the two slide rails, the first hydraulic cylinder is connected to the support ring, the guide and slide frame is connected to the support ring, the hydraulic vibratory hammer is slidably connected in the guide and slide frame, a pile outlet hole is formed at the lower end of the guide and slide frame, and clearance grooves are formed on one side of the guide and slide frame and one side of the support ring.

[0022] As a further description of the above technical solution:

[0023] A shock-absorbing pad is provided between the support ring and the guide slide, and a shock-absorbing shell wraps around the hydraulic vibratory hammer, with the shock-absorbing shell abutting against the inner wall of the guide slide.

[0024] As a further description of the above technical solution:

[0025] A fourth hydraulic cylinder is provided at the upper end of the guide slide, and an electromagnet is provided at the end of the fourth hydraulic cylinder. The electromagnet abuts against and magnetically adsorbs the hydraulic vibratory hammer.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, the direction of pile driving is accurately adjusted in multiple directions through a multi-degree-of-freedom platform. Without moving the entire pile driver, the pile driving point can be quickly located, which is suitable for compensating and adjusting the pile driving angle in complex terrains. There is no need to level the foundation to provide a docking platform for the pile driver, saving unnecessary construction and improving the pile driving efficiency. The pile pressing mechanism is used for inclined pile driving during soft soil operations. When encountering hard rock, only the first hydraulic cylinder needs to push the pile hammer mechanism to the pile hole to perform hammer pile driving, ensuring the continuity of pile driving and greatly improving the flexibility and versatility of the entire device.

[0028] 2. In the present invention, during pile driving operations, the foundation pile penetrates into the flange pipe through the pile hole. After multiple third hydraulic cylinders extend, multiple support blocks abut against the foundation pile from different positions, and multiple second hydraulic cylinders contract synchronously to drive the foundation pile to move, thereby completing static pile pressing and ensuring the pile driving efficiency during soft soil pile driving operations.

[0029] 3. In the present invention, the clearance groove can prevent interference between the already driven inclined pile and the support ring and the guide slide. The clearance hole and the pile outlet hole are in a communicating state. The hydraulic vibratory hammer generates vibration acting on the end of the foundation pile, and the hydraulic vibratory hammer can freely slide within the guide slide, thereby completing hammer pile driving, ensuring the continuity of pile driving, and greatly improving the flexibility and versatility of the entire device. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall structure of an adjustable hydraulic pile hammer for inclined pile driving.

[0031] Figure 2 It is the front view of an adjustable hydraulic pile hammer for inclined pile driving.

[0032] Figure 3 For an exploded view of an adjustable hydraulic pile hammer for inclined pile driving Figure 1 .

[0033] Figure 4 For an exploded view of an adjustable hydraulic pile hammer for inclined pile drivingFigure 2 。

[0034] Figure 5 It is a reference diagram of the usage state of an adjustable hydraulic pile hammer for inclined pile driving.

[0035] Figure 6 It is a schematic structural diagram of the pile pressing mechanism in an adjustable hydraulic pile hammer for inclined pile driving.

[0036] Figure 7 It is an exploded view of the pile pressing mechanism in an adjustable hydraulic pile hammer for inclined pile driving.

[0037] Figure 8 It is a reference diagram of the usage state of the pile pressing mechanism in an adjustable hydraulic pile hammer for inclined pile driving.

[0038] Legend description:

[0039] 1. Multi-degree-of-freedom platform; 2. Pile pressing mechanism; 21. Flange pipe; 22. Slide block; 23. Second hydraulic cylinder; 24. Third hydraulic cylinder; 3. Upper support plate; 4. Pile entry hole; 5. Pile hammering mechanism; 51. Support ring; 52. Guide slide; 53. Hydraulic vibratory hammer; 6. Slide rail; 7. First hydraulic cylinder; 8. Support block; 9. Slide groove; 10. Guide post; 11. Pile exit hole; 12. Clearance groove; 13. Shock-absorbing shell; 14. Fourth hydraulic cylinder; 15. Electromagnet. Specific implementation mode

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0041] Please refer to Figure 1-8 , the present invention provides a technical solution: an adjustable hydraulic pile hammer for inclined pile driving, including:

[0042] Multi-degree-of-freedom platform 1;

[0043] Pile pressing mechanism 2, which is arranged in the multi-degree-of-freedom platform 1, and the pile pressing mechanism 2 is connected to the upper support plate 3 of the multi-degree-of-freedom platform 1, and a pile entry hole 4 is provided on the upper support plate 3;

[0044] Pile hammering mechanism 5, which is connected to the top of the upper support plate 3 through two slide rails 6;

[0045] First hydraulic cylinder 7, which is fixedly connected to the top of the upper support plate 3, and the first hydraulic cylinder 7 is connected to and drives the pile hammering mechanism 5;

[0046] The multi-degree-of-freedom platform 1 is a six-degree-of-freedom hydraulic platform;

[0047] The pile pressing mechanism 2 includes a flange pipe 21, a plurality of sliders 22, a plurality of second hydraulic cylinders 23 and a plurality of third hydraulic cylinders 24. The flange pipe 21 is fixedly connected to the upper support plate 3, and the axis of the flange pipe 21 coincides with the axis of the pile entry hole 4. The plurality of sliders 22 are arranged in a circular array, and the plurality of sliders 22 are slidably connected in the flange pipe 21. The plurality of second hydraulic cylinders 23 are fixedly connected to the end of the flange pipe 21, and the plurality of second hydraulic cylinders 23 are respectively connected to and drive the plurality of sliders 22. The plurality of third hydraulic cylinders 24 are respectively connected to the plurality of sliders 22. A support block 8 is hinged on the telescopic end of the third hydraulic cylinder 24. During pile driving operation, the foundation pile penetrates into the flange pipe 21 from the pile entry hole 4. After the plurality of third hydraulic cylinders 24 extend, the plurality of support blocks 8 abut against the foundation pile from different positions. The plurality of second hydraulic cylinders 23 contract synchronously to drive the position movement of the foundation pile, thereby completing static pressure pile driving. The power sources of the second hydraulic cylinders 23 and the third hydraulic cylinders 24 can be connected to the hydraulic station of the pile driver. The telescopic control of the second hydraulic cylinders 23 can be realized by an electromagnetic control valve and a controller;

[0048] A plurality of chutes 9 are formed in the flange pipe 21. A plurality of guide columns 10 are arranged in the chutes 9. The plurality of sliders 22 are respectively arranged in the plurality of chutes 9. The sliders 22 are slidably connected to the plurality of guide columns 10 to ensure stable sliding of the sliders 22;

[0049] The axes of the guide columns 10, the axes of the second hydraulic cylinders 23 and the axis of the flange pipe 21 are parallel to each other. The axis of the third hydraulic cylinder 24 is perpendicular to the axis of the second hydraulic cylinder 23 to ensure effective static pressure pile driving;

[0050] The pile hammering mechanism 5 includes a support ring 51, a guide slide 52 and a hydraulic vibratory hammer 53. The support ring 51 is slidably connected to the two slide rails 6. The first hydraulic cylinder 7 is connected to the support ring 51. The guide slide 52 is connected to the support ring 51. The hydraulic vibratory hammer 53 is slidably connected in the guide slide 52. An exit pile hole 11 is arranged at the lower end of the guide slide 52. Avoidance grooves 12 are formed on one side of the guide slide 52 and one side of the support ring 51. The avoidance grooves 12 can prevent the already driven inclined piles from interfering with the support ring 51 and the guide slide 52. The avoidance holes and the exit pile hole 11 are in a communicating state. The hydraulic vibratory hammer 53 generates vibration acting on the end of the foundation pile. The hydraulic vibratory hammer 53 can freely slide in the guide slide 52, thereby completing hammer pile driving, ensuring the coherence of pile driving, and greatly improving the use flexibility and versatility of the entire device;

[0051] A shock-absorbing pad is provided between the support ring 51 and the guide slide 52. A shock-absorbing shell 13 is wrapped around the hydraulic vibratory hammer 53, and the shock-absorbing shell 13 abuts against the inner wall of the guide slide 52 to reduce the impact of the vibration of the hydraulic vibratory hammer 53 on other structural components;

[0052] A fourth hydraulic cylinder 14 is provided at the upper end of the guide slide 52. An electromagnet 15 is provided at the end of the fourth hydraulic cylinder 14. The electromagnet 15 abuts against and magnetically adsorbs the hydraulic vibratory hammer 53. The telescopic movement of the fourth hydraulic cylinder 14 can pull the hydraulic vibratory hammer 53 to move within the guide slide 52, so that the hydraulic vibratory hammer 53 is lifted to the end of the foundation pile. When the hydraulic vibratory hammer 53 is started, it is required that the magnetism of the electromagnet 15 disappears after power-off, so as to ensure that the hydraulic vibratory hammer 53 can move freely within the guide slide 52 to complete the pile driving operation by hammering.

[0053] Working principle: First, the whole device is installed on a pile driver, and the pile driver is driven to the area where piling is required. This area is not necessarily a flat roadbed. At this time, the guide slide 52 is located on one side of the pile insertion hole 4 to prevent interference with the pile driving operation. Secondly, the crane inserts the foundation pile into the flange pipe 21 through the pile insertion hole 4. The multi-degree-of-freedom platform 1 moves to adjust the angle of the flange pipe 21, and the pile driving point can be accurately and quickly found, so as to make corresponding compensation for the rugged terrain. After multiple third hydraulic cylinders 24 extend, multiple support blocks 8 abut against the foundation pile from different points. Multiple second hydraulic cylinders 23 contract synchronously to drive the foundation pile to move. At this time, the slider 22 slides along multiple guide posts 10 in the chute 9, thereby completing the static pressure pile driving. The power sources of the second hydraulic cylinders 23 and the third hydraulic cylinders 24 can be connected to the hydraulic station of the pile driver. The telescopic control of the second hydraulic cylinders 23 can be realized by an electromagnetic control valve and a controller. Then, if hard rock is encountered, the hammer pile mechanism 5 needs to be activated at this time. The telescopic movement of the fourth hydraulic cylinder 14 can pull the hydraulic vibratory hammer 53 to move within the guide slide 52, so that the hydraulic vibratory hammer 53 is lifted above the foundation pile. The telescopic movement of the first hydraulic cylinder 7 drives the support ring 51 and the guide slide 52 to slide along the slide rail 6. The foundation pile enters the guide slide 52 through the clearance groove 12, and the pile insertion hole 4 and the pile outlet hole 11 are aligned. Finally, before the hydraulic vibratory hammer 53 is started, the magnetism of the electromagnet 15 disappears after power-off. The hydraulic vibratory hammer 53 slides along the guide slide 52 and then abuts against the end of the foundation pile. The hydraulic vibratory hammer 53 generates vibration on the end of the foundation pile, and the hydraulic vibratory hammer 53 can slide freely within the guide slide 52, thereby completing the pile driving by hammering.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An adjustable hydraulic pile hammer for oblique piling, characterized in that: include: Multi-degree-of-freedom platform (1); A pile-pressing mechanism (2) is arranged in the multi-degree-of-freedom platform (1), and the pile-pressing mechanism (2) is connected to an upper support plate (3) of the multi-degree-of-freedom platform (1), and a pile entry hole (4) is arranged on the upper support plate (3); A pile hammer mechanism (5) connected to the top of the upper support plate (3) via two slide rails (6); A first hydraulic cylinder (7) is fixedly connected to the top of the upper support plate (3), and the first hydraulic cylinder (7) is connected to and drives the pile hammer mechanism (5).

2. The adjustable hydraulic pile hammer for oblique piling according to claim 1, characterized in that: The multi-degree-of-freedom platform (1) is a six-degree-of-freedom hydraulic platform.

3. The adjustable hydraulic pile hammer for oblique piling according to claim 2, characterized in that: The pile-pressing mechanism (2) comprises a flange tube (21), a plurality of sliders (22), a plurality of second hydraulic cylinders (23) and a plurality of third hydraulic cylinders (24); the flange tube (21) is fixedly connected to the upper support plate (3), and the axis of the flange tube (21) coincides with the axis of the pile entry hole (4); the plurality of sliders (22) are arranged in a ring array, and the plurality of sliders (22) are slidably connected in the flange tube (21); the plurality of second hydraulic cylinders (23) are fixedly connected to the ends of the flange tube (21), and the plurality of second hydraulic cylinders (23) are respectively connected to and drive the plurality of sliders (22); the plurality of third hydraulic cylinders (24) are respectively connected to the plurality of sliders (22); and a support block (8) is hinged on the telescopic end of the third hydraulic cylinder (24).

4. The adjustable hydraulic pile hammer for oblique piling according to claim 3, characterized in that: The flange tube (21) is provided with a plurality of slide grooves (9), a plurality of guide pillars (10) are arranged in the slide grooves (9), a plurality of sliders (22) are respectively arranged in the plurality of slide grooves (9), and the sliders (22) are slidably connected to the plurality of guide pillars (10).

5. The adjustable hydraulic pile hammer for oblique piling according to claim 4, characterized in that: The axis of the guide column (10), the axis of the second hydraulic cylinder (23) and the axis of the flange pipe (21) are parallel to each other, and the axis of the third hydraulic cylinder (24) is perpendicular to the axis of the second hydraulic cylinder (23).

6. The adjustable hydraulic pile hammer for oblique piling according to claim 5, characterized in that: The pile hammer mechanism (5) comprises a support ring (51), a guide slide (52) and a hydraulic vibration hammer (53); the support ring (51) is slidably connected to the two slide rails (6); the first hydraulic cylinder (7) is connected to the support ring (51); the guide slide (52) is connected to the support ring (51); the hydraulic vibration hammer (53) is slidably connected in the guide slide (52); a pile hole (11) is provided at the lower end of the guide slide (52); and a clearance groove (12) is provided on one side of the guide slide (52) and one side of the support ring (51).

7. An adjustable hydraulic pile hammer for oblique piling according to claim 6, characterized in that: A shock-absorbing pad is provided between the support ring (51) and the guide slide (52); a shock-absorbing shell (13) is wrapped around the hydraulic vibration hammer (53); and the shock-absorbing shell (13) abuts against the inner wall of the guide slide (52).

8. The adjustable hydraulic pile hammer for oblique piling according to claim 7, characterized in that: A fourth hydraulic cylinder (14) is disposed at the upper end of the guide slide (52), an electromagnet (15) is disposed at the end of the fourth hydraulic cylinder (14), and the electromagnet (15) is attached to and magnetically adsorbs the hydraulic vibration hammer (53).

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