Multifunctional pile driver

Abstract

The invention relates to a multifunctional pile driver. Comprising a construction vehicle with a driving and control position; a supporting bottom frame is installed on the front portion of the construction vehicle, a stable supporting frame is installed on the supporting bottom frame, a piling device is installed on the supporting bottom frame in a hinged mode, a turnover hydraulic cylinder is arranged between the supporting bottom frame and the piling device, and the piling device comprises a lifting driving assembly and a piling assembly driven by the lifting driving assembly to ascend and descend. The lifting driving assembly comprises a bottom platform with a notch, a multi-stage telescopic pile frame is installed on the bottom platform, and a lifting platform and a lifting driving assembly for driving the multi-stage telescopic pile frame to stretch out and draw back and driving the lifting platform to conduct lifting displacement at the same time are installed on the multi-stage telescopic pile frame. The piling assembly comprises a box body fixed to the lifting platform, a bottom base is installed at the bottom of the box body, a pipe sleeve is installed on the lower portion of the bottom base, a vibroflotation pile hammer and a lifting hydraulic cylinder used for lifting the vibroflotation pile hammer are arranged in the box body, and a hooking and unhooking hydraulic cylinder is installed on the side wall of the vibroflotation pile hammer. A detachable tamping assembly is installed on the pipe sleeve. The invention provides a multifunctional pile driver which has the functions of vibroflotation pile driving, static pressure pile driving and tamping.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a multifunctional pile driver. Background Art

[0002] A pile driver is a pile driving machine that uses impact force to drive piles into the ground. It consists of a pile hammer, a pile frame, and auxiliary equipment. It is widely used in modern projects such as roadbed construction, building construction, and environmental protection construction. The pile hammer moves up and down along the direction defined by the pile frame and is lifted and lowered by a lifting hook, so that the pile is accurately driven into the ground according to the designed direction.

[0003] In some construction scenarios, due to the vibration, noise, pollution and other construction hazards caused by pile foundation construction, which have attracted the attention of all sectors of society, it is necessary to use static pressure piling to drive piles. In other construction scenarios, it is necessary to give full play to the advantages of vibration piling. At the same time, in the construction of some soft soil foundations, it is necessary to use tamping technology to compact the soft soil foundation to provide a construction foundation for the next step of construction. It can be seen that in various modern construction projects, comprehensive equipment is needed to meet the different construction needs of various scenarios. The vibro-pile driving equipment, static pressure pile driving equipment and tamping equipment in the prior art are all independent equipment with independent functions. At the construction site, it is necessary to configure a variety of equipment according to construction needs, which leads to cumbersome equipment allocation and application, and increases the equipment capital investment of the construction party.

[0004] In summary, it is necessary to develop and design a construction equipment with multiple functions to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a multifunctional pile driver with vibration pile driving, static pressure pile driving and tamping functions, so that the same equipment can basically meet the piling and foundation compaction requirements of the construction site.

[0006] The technical solution adopted by the present invention is: a multifunctional pile driver, including a construction vehicle with a driving and control position; a supporting chassis is installed at the front of the construction vehicle, a stabilizing supporting frame is installed on the supporting chassis, a pile driving device is hingedly installed on the supporting chassis, and a flip hydraulic cylinder is provided between the supporting chassis and the pile driving device, the pile driving device includes a lifting drive assembly and a pile driving assembly driven to be lifted and lowered thereby; the lifting drive assembly includes a bottom platform with a notch, a multi-stage telescopic pile frame is installed on the bottom platform, a lifting platform and a lifting drive assembly that drives the multi-stage telescopic pile frame to be telescopic and the lifting platform to be lifted and lowered and shifted are installed on the multi-stage telescopic pile frame; the pile driving assembly includes a box body fixed to the lifting platform, a bottom base is installed at the bottom of the box body, a pipe sleeve is installed at the lower part of the bottom base, a vibratory pile hammer and a lifting hydraulic cylinder for lifting the vibratory pile hammer are provided inside the box body, a hooking and unhooking hydraulic cylinder is installed on the side wall of the vibratory pile hammer, and a detachable tamping assembly is installed on the pipe sleeve.

[0007] Preferably, the multi-stage telescopic pile frame is a three-stage telescopic pile frame, including a first-stage pile frame with an open top and a second-stage pile frame with a first-stage door-type. The bottom platform is installed and fixed at the bottom of the first-stage pile frame, a rotating connecting seat is installed at the lower rear part of the first-stage pile frame, and a flip connecting seat is installed at the middle rear part of the first-stage pile frame. The rotating connecting seat is hingedly connected to the front of the supporting base frame by a rotating shaft, the rear end of the cylinder body of the flip hydraulic cylinder is hingedly connected to the supporting base frame, and the front end of the piston rod is hingedly connected to the middle part of the flip connecting seat.

[0008] Preferably, the lifting and lowering drive assembly of the multi-stage telescopic pile frame includes a lifting hydraulic cylinder and two sets of chains. Connecting seats are installed on the tops of the secondary pile frame and the tertiary pile frame. The lower end of the cylinder body of the lifting hydraulic cylinder is hingedly connected to the bottom platform, and the upper end of the piston rod is hingedly connected to the connecting seat of the secondary pile frame. Sprockets are installed on the connecting seats of the secondary pile frame and the tertiary pile frame. One end of one set of chains is fixedly connected to the bottom platform, the middle part bypasses the sprocket on the secondary pile frame, and the other end is fixedly connected to the lower part of the secondary pile frame. One end of the other set of chains is fixedly connected to the top of the secondary pile frame, the middle part bypasses the sprocket on the tertiary pile frame, and the other end is fixedly connected to the lifting platform.

[0009] Preferably, a detachable pile limiting plate is also installed on the bottom platform, the pile limiting plate is fixedly connected to the bottom platform by bolts, and a pile accommodating notch consistent with the contour shape of the pile is provided at the front of the pile limiting plate.

[0010] Preferably, the box body of the piling assembly includes a lower box body and an upper box body, the bottom base is fixedly installed on the bottom of the lower box body, the lifting hydraulic cylinder is installed on the top wall of the lower box body, the vibratory pile hammer is located inside the lower box body, and a strip hole is also provided on the side wall of the lower box body, and the cylinder body of the hook and unhooking hydraulic cylinder is located in the strip hole.

[0011] Preferably, a vertically penetrating center hole is provided in the center of the vibratory pile hammer, a radially penetrating mounting hole is provided in the middle of the vibratory pile hammer and the hooking and unhooking hydraulic cylinder is installed and fixed in the mounting hole, the piston rod of the unhooking hydraulic cylinder serves as a locking pin for hooking and unhooking, and a pin hole for hooking and unhooking is provided at the lower end of the piston rod of the lifting hydraulic cylinder.

[0012] Preferably, the ramming assembly includes a cylindrical ramming column, a ramming plate is installed at the lower end of the ramming column, an external thread portion is provided at the upper end of the ramming column, an internal thread is provided on the inner wall of the sleeve, and the upper end of the ramming column is threadedly connected to the sleeve.

[0013] Preferably, a mounting groove is provided on the front top of the construction vehicle, and the supporting chassis comprises a supporting frame, and the supporting frame is fixed in the mounting groove by connecting legs located at four corners.

[0014] Preferably, the stable support frame includes a rear crossbeam and a front left crossbeam and a front right crossbeam installed and fixed on the supporting base frame, the front left crossbeam and the front right crossbeam are arranged in a V shape and the rear end is fixedly connected to the middle part of the rear crossbeam; the rear crossbeam and the front left crossbeam and the front right crossbeam are all C-shaped steels and the groove faces downward, and a supporting hydraulic cylinder is installed in the groove of each crossbeam, and the rear end of the cylinder body of the supporting hydraulic cylinder is hingedly connected to the end of the crossbeam where it is located.

[0015] The advantages and positive effects of the present invention are:

[0016] The present invention provides a multifunctional pile driver, which has vibration pile driving function, static pressure pile driving function and tamping function, and can meet the diverse needs for construction equipment in different construction scenes, so that the same equipment can basically meet the piling and foundation compaction needs of the construction site, which can reduce the equipment investment of the construction party and is conducive to the allocation and application of construction equipment.

[0017] The supporting chassis, the stabilizing supporting frame and the piling device are installed on an engineering vehicle, so the piling machine equipment of the present invention is flexible to move. Since a turning hydraulic cylinder is installed between the piling device and the supporting chassis, the piling device can be quickly switched between a vertical construction state and a horizontal folding state. When the piling device is not in the construction state, the overall height of the equipment and the center of gravity can be reduced, thereby improving the passability and stability during displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 yes Figure 1 Structural schematic diagram of the middle support frame and the stabilizing support frame;

[0020] Figure 3 yes Figure 1 Schematic diagram of the structure of the piling device, from the lower front view;

[0021] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle pile driving device, from the lower back view;

[0022] Figure 5 yes Figure 3 and Figure 4 A schematic diagram of the structure of the lifting drive assembly in FIG.

[0023] Figure 6 yes Figure 3 and Figure 4 Schematic diagram of the main perspective structure of the piling assembly.

[0024] In the figure:

[0025] 1. Construction vehicle; 2. Driving and control position; 3. Support chassis; 3-1. Support frame; 3-2. Connecting legs; 4. Stable support frame; 4-1. Rear crossbeam; 4-2. Front right crossbeam; 4-3. Front left crossbeam; 4-4. Top support hydraulic cylinder; 5. Lifting drive assembly; 5-1. Bottom platform; 5-2. Notch; 5-3. Pile limit plate; 5-4. Multi-stage telescopic pile frame; 5-5. Chain; 5- 6. Lifting hydraulic cylinder; 5-7. Flipping connecting seat; 5-8. Rotating connecting seat; 5-9. Lifting platform; 6. Pile driving assembly; 6-1. Lower box; 6-2. Upper box; 6-3. Bottom base; 6-4. Pipe sleeve; 6-5. Strip hole; 6-6. Vibratory pile hammer; 6-7. Hooking and unhooking hydraulic cylinder; 6-8. Lifting hydraulic cylinder; 7. Ramming assembly; 8. Rotating shaft; 9. Flipping hydraulic cylinder; 10. Connecting frame. DETAILED DESCRIPTION

[0026] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

[0027] See also Figure 1 The multifunctional pile driver of the present invention comprises a construction vehicle 1 with a driving and control position 2. The construction vehicle 1 can be a roller vehicle or a crawler vehicle to give full play to its mobile and flexible characteristics. The driving and control position 2 is used to drive the vehicle to move and perform on-site control of construction activities.

[0028] A supporting frame 3 is installed at the front of the construction vehicle 1, a stabilizing supporting frame 4 is installed on the supporting frame 3, a piling device is hingedly installed on the supporting frame 3, and a turning hydraulic cylinder 9 is provided between the supporting frame 3 and the piling device. Under the action of the turning hydraulic cylinder 9, the piling device is in a horizontal folding state (such as Figure 1 to switch between the vertical working state and the vertical working state.

[0029] See also Figure 1 and Figure 2 , we can see that:

[0030] A mounting groove is provided at the front top of the construction vehicle 1, and the supporting frame 3 includes a supporting frame 3-1, which is fixed in the mounting groove by connecting legs 3-2 located at four corners. The supporting frame 3 provides stable support for the stabilizing support frame 4 and the piling device.

[0031] See also Figure 2 , we can see that:

[0032] The stabilizing support frame 4 includes a rear cross beam 4-1 and a front left cross beam 4-3 and a front right cross beam 4-2 which are fixedly mounted on the support base frame 3. Specifically, the rear cross beam 4-1 and the front left cross beam 4-3 and the front right cross beam 4-2 are fixedly connected to the support frame 3-1. The front left cross beam 4-3 and the front right cross beam 4-2 are arranged in a V shape and the rear end is fixedly connected to the middle of the rear cross beam 4-1.

[0033] The rear cross beam 4-1, the front left cross beam 4-3 and the front right cross beam 4-2 are all C-shaped steel with the groove facing downward. A supporting hydraulic cylinder 4-4 is installed in the groove of each cross beam, and the rear end of the cylinder body of the supporting hydraulic cylinder 4-4 is hingedly connected to the end of the cross beam.

[0034] The purpose of setting up the stable support frame 4 is: during construction, the four top support hydraulic cylinders 4-4 are swung downward to a vertical state, and then the piston rods of the four top support hydraulic cylinders 4-4 are controlled to extend downward until the pad at the end of the piston rod contacts the ground, so that during construction, the stable support frame 4 forms four-point hydraulic support at the front of the construction vehicle 1, that is, it has four hydraulic outriggers, and the stability during construction is improved by these four hydraulic outriggers.

[0035] The piling device comprises a lifting drive assembly 5 and a piling assembly 6 driven to be lifted and lowered by the lifting drive assembly 5.

[0036] See also Figure 3 , Figure 4 and Figure 5 , we can see that:

[0037] The lifting drive assembly 5 includes a bottom platform 5-1 with a notch 5-2, a multi-stage telescopic pile frame 5-4 is installed on the bottom platform 5-1, a lifting platform 5-9 is installed on the multi-stage telescopic pile frame 5-4, and a lifting drive assembly that drives the multi-stage telescopic pile frame 5-4 to be telescopic and the lifting platform 5-9 to be lifted and shifted.

[0038] Under the driving action of the lifting drive assembly, the lifting platform 5-9 moves along the direction defined by the multi-stage telescopic pile frame 5-4. The notch 5-2 provided on the bottom platform 5-1 is used to accommodate the pile. In this embodiment, a detachable pile limiting plate 5-3 is also installed on the bottom platform 5-1. The pile limiting plate 5-3 is fixedly connected to the bottom platform 5-1 by bolts, and a pile accommodating notch consistent with the contour shape of the pile is provided at the front of the pile limiting plate 5-3. Figure 3 The pile-accommodating groove shown in the figure is rectangular in shape. When the pile driving construction is carried out, the pile with a rectangular cross-section falls into the pile-accommodating groove of the pile limiting plate 5-3, which produces a limiting effect and improves the control ability of the pile driving position.

[0039] In this embodiment, the multi-stage telescopic pile frame 5-4 is a three-stage telescopic pile frame, including a first-stage pile frame with an open top and a third-stage pile frame with a first-stage door type, wherein the second-stage pile frame is located on the inner side of the first-stage pile frame, and the third-stage pile frame is located on the inner side of the second-stage pile frame, that is, the pile frames of each stage are nested step by step, and the inner pile frame uses the outer pile frame as a moving guide track, so that the multi-stage telescopic pile frame 5-4 can perform a larger range of telescopic movement to meet the requirements of the construction site for the piling depth.

[0040] The bottom platform 5-1 is fixedly mounted on the bottom of the first-level pile frame, a rotating connection seat 5-8 is mounted on the lower rear of the first-level pile frame, and a flip connection seat 5-7 is mounted on the middle rear of the first-level pile frame. The rotating connection seat 5-8 is hingedly connected to the front of the supporting base frame 3 by a rotating shaft 8, and the rear end of the cylinder body of the flip hydraulic cylinder 9 is hingedly connected to the supporting base frame 3, and the front end of the piston rod is hingedly connected to the middle of the flip connection seat 5-7. In this way, when the piston rod of the flip hydraulic cylinder 9 performs a telescopic action, the lifting drive assembly 5 flips and rotates around the rotating shaft 8 as the center, and performs posture conversion between the horizontal folding state and the vertical working state.

[0041] The lifting drive assembly of the multi-stage telescopic pile frame 5-4 includes a lifting hydraulic cylinder 5-6 and two groups of chains 5-5. The lifting hydraulic cylinder 5-6 is a long-stroke hydraulic cylinder to ensure that the multi-stage telescopic pile frame 5-4 can produce enough travel. A connecting seat is installed on the top of the secondary pile frame and the tertiary pile frame. The lower end of the cylinder body of the lifting hydraulic cylinder 5-6 is hingedly connected to the bottom platform 5-1, and the upper end of the piston rod is hingedly connected to the connecting seat of the secondary pile frame. Sprockets are installed on the connecting seats of the secondary pile frame and the tertiary pile frame, one end of one group of chains 5-5 (two are symmetrically arranged) is fixedly connected to the bottom platform 5-1, the middle part bypasses the sprocket on the secondary pile frame, and the other end is fixedly connected to the bottom of the secondary pile frame, and another group of chains 5-5 (two are symmetrically arranged) is fixedly connected to the top of the secondary pile frame, the middle part bypasses the sprocket on the tertiary pile frame, and the other end is fixedly connected to the lifting platform 5-9.

[0042] Guide slide blocks are provided on both sides of the back of the lifting platform 5-9, and the guide slide blocks are located in the guide track grooves on the inner side of the three-stage pile frame. In this way, by controlling the piston rod of the lifting hydraulic cylinder 5-6 to perform telescopic action, a telescopic action occurs between the second-stage pile driver and the first-stage pile frame, and a telescopic action occurs synchronously between the third-stage pile frame and the second-stage pile frame. When the piston rod of the lifting hydraulic cylinder 5-6 is fully extended, the multi-stage telescopic pile frame 5-4 is extended to its longest length. Conversely, when the piston rod of the lifting hydraulic cylinder 5-6 is fully retracted, the multi-stage telescopic pile frame 5-4 is retracted to its shortest length. In this process, the lifting platform 5-9 and its accessories are lifted and shifted.

[0043] See also Figure 3 , Figure 4 and Figure 5 , Figure 6 , we can see that:

[0044] The pile driving assembly 6 includes a box body fixed to the lifting platform 5-9, a bottom base 6-3 is installed at the bottom of the box body, and a pipe sleeve 6-4 is installed at the lower part of the bottom base 6-3. A vibratory pile hammer 6-6 and a lifting hydraulic cylinder 6-8 for lifting the vibratory pile hammer 6-6 are arranged inside the box body, and a hooking and unhooking hydraulic cylinder 6-7 is installed on the side wall of the vibratory pile hammer 6-6. Its action mode is: the piston rod of the lifting hydraulic cylinder 6-8 is extended, the hooking and unhooking hydraulic cylinder 6-7 is operated to hook, and the vibratory pile hammer 6-6 is combined with the piston rod of the lifting hydraulic cylinder 6-8 as a whole, then the piston rod of the lifting hydraulic cylinder 6-8 is retracted, and the vibratory pile hammer 6-6 is lifted to a high position, then the hooking and unhooking hydraulic cylinder 6-7 is operated to unhook, and the vibratory pile hammer 6-6 is disconnected from the piston rod of the lifting hydraulic cylinder 6-8, and the vibratory pile hammer 6-6 falls under the action of gravity to produce a vibratory function.

[0045] In this embodiment, the box body of the piling assembly 6 includes a lower box body 6-1 and an upper box body 6-2. The lower and middle part of the lower box body 6-1 is fixedly connected to the lifting platform 5-9 of the lifting drive assembly 5 by two left and right connecting frames 10. The bottom base 6-3 is installed and fixed at the bottom of the lower box body 6-1. The lifting hydraulic cylinder 6-8 is installed on the top wall of the lower box body 6-1. The vibratory pile hammer 6-6 is located inside the lower box body 6-1. A strip hole 6-5 is also provided on the side wall of the lower box body 6-1. The cylinder body of the hooking and unhooking hydraulic cylinder 6-7 is located in the strip hole 6-5. When the vibratory pile hammer 6-6 is lifted upward and falls under the action of gravity, the cylinder body of the hooking and unhooking hydraulic cylinder 6-7 moves in the strip hole 6-5.

[0046] In this embodiment, a vertically penetrating center hole is provided in the center of the vibratory pile hammer 6-6, a radially penetrating mounting hole is provided in the middle of the vibratory pile hammer 6-6, and the hooking and unhooking hydraulic cylinder 6-7 is installed and fixed in the mounting hole, the piston rod of the unhooking hydraulic cylinder 6-7 serves as a locking pin for hooking and unhooking, and the lower end of the piston rod of the lifting hydraulic cylinder 6-8 is provided with a pin hole for hooking and unhooking.

[0047] A detachable tamping assembly 7 is installed on the pipe sleeve 6 - 6 of the piling assembly 6 . The tamping assembly 7 is installed when the foundation tamping construction is being carried out and is disassembled when the foundation tamping construction is not being carried out.

[0048] In this embodiment, the ramming assembly 7 includes a cylindrical ramming column, a ramming pressure plate is installed at the lower end of the ramming column, an external thread portion is provided at the upper end of the ramming column, an internal thread is provided on the inner wall of the pipe sleeve 6-4, and the upper end of the ramming column is threadedly connected to the pipe sleeve 6-4, so that the ramming assembly 7 can be installed or disassembled as needed. Figure 3 and Figure 6 As shown in the figure, in order to improve the structural strength, a plurality of reinforcing ribs are installed between the bottom surface of the bottom base 6-3 and the outer wall of the pipe sleeve 6-4. The lower end of the pipe sleeve 6-4 is a flat port. When piling construction is carried out, the lower end surface of the pipe sleeve 6-4 contacts the top of the pile.

[0049] Operation Mode:

[0050] 1) Static pressure piling mode

[0051] The stable support frame 4 is operated to unfold and stably support the front of the construction vehicle 1, and the turning hydraulic cylinder 9 is operated to turn the pile driving device to a vertical state;

[0052] In the static pressure piling mode, the vibratory pile hammer 6-6 does not perform hooking and unhooking actions; the lifting drive assembly 5 lifts the piling assembly 6 to a suitable height position, then places the pile into the notch of the bottom platform 5-1, and further places the pile into the pile receiving notch of the pile limit plate 5-3, and the lifting drive assembly 5 drives the piling assembly 6 down until the lower end of the pipe sleeve 6-4 of the piling assembly 6 contacts the top surface of the pile; then the lifting drive assembly 5 moves further, and the piling assembly 6 further presses the pile down until the pile is driven to a suitable depth in the stratum;

[0053] After the piling construction at one position is completed, the piston rods of the top supporting hydraulic cylinders 4 - 4 of the stable support frame 4 are operated to retract upward to leave the ground, and then the construction vehicle 1 is operated to move to the next piling position.

[0054] 2) Vibratory piling mode

[0055] The stable support frame 4 is operated to unfold and stably support the front of the construction vehicle 1, and the turning hydraulic cylinder 9 is operated to turn the pile driving device to a vertical state;

[0056] In the vibro-pile driving mode, the vibro-pile hammer 6-6 performs hooking and unhooking actions; the lifting drive assembly 5 lifts the piling assembly 6 to a suitable height position, then places the pile into the notch of the bottom platform 5-1, and further places the pile into the pile-accommodating notch of the pile limit plate 5-3, and the lifting drive assembly 5 drives the piling assembly 6 down until the lower end of the pipe sleeve 6-4 of the piling assembly 6 contacts the top surface of the pile; then the piston rod of the hooking and unhooking hydraulic cylinder 6-7 extends out and fits into the pin hole at the end of the piston rod of the lifting hydraulic cylinder 6-8, realizing the hooking action. The vibratory pile hammer 6-6 is lifted to a high position by the lifting hydraulic cylinder 6-8, and then the piston rod of the hook-unhooking hydraulic cylinder 6-7 is retracted to realize the unhooking action, and the vibratory pile hammer 6-6 falls freely and hits the bottom base 6-3. The bottom base 6-3 and the pipe sleeve 6-4 exert a vibratory action on the pile, so that the pile is further inserted into the bottom layer; then the lifting drive assembly 5 further moves the pile driving assembly 6 downward until the lower end surface of the pipe sleeve 6-4 contacts the top of the pile again, and the above-mentioned action is performed again until the pile is driven to a suitable depth of the formation;

[0057] After the piling construction at one position is completed, the piston rods of the top supporting hydraulic cylinders 4 - 4 of the stable support frame 4 are operated to retract upward to leave the ground, and then the construction vehicle 1 is operated to move to the next piling position.

[0058] 3) Ramming mode

[0059] The stable support frame 4 is not unfolded to stably support the front of the construction vehicle 1, and the turning hydraulic cylinder 9 is operated to turn the pile driving device to a vertical state, and the tamping assembly 7 is installed on the pipe sleeve 6-4;

[0060] In the tamping mode, the vibro-impact pile hammer 6-6 does not perform hooking and unhooking actions; the lifting drive assembly 5 lifts the pile driving assembly 6 to a suitable height position, at which time the tamping pressure plate of the tamping assembly 7 is located a certain distance above the ground, and the lifting drive assembly 5 drives the pile driving assembly 6 to move downward, then the tamping assembly 7 moves downward, the tamping pressure plate is pressed on the soft soil foundation and produces a tamping effect on the soil layer, and the tamping assembly 7 can be repeatedly lifted and lowered at the same position, and multiple tamping effects are applied to the same point;

[0061] After completing the tamping construction at one location, the construction vehicle 1 is operated to move to the next tamping point.

Claims

1. A multifunctional pile driver, comprising a construction vehicle (1) with a driving and control position (2); wherein: A support frame (3) is installed at the front of the construction vehicle (1), a stabilizing support frame (4) is installed on the support frame (3), a piling device is hingedly installed on the support frame (3), and a tilting hydraulic cylinder (9) is provided between the support frame (3) and the piling device, the piling device comprises a lifting drive assembly (5) and a piling assembly (6) driven to be lifted and lowered by the lifting drive assembly (5); the lifting drive assembly (5) comprises a bottom platform (5-1) with a notch (5-2), a multi-stage telescopic pile frame (5-4) is installed on the bottom platform (5-1), a lifting platform (5-9) and a lifting and lowering mechanism (5-10) are installed on the multi-stage telescopic pile frame (5-4) A lifting drive assembly drives a multi-stage telescopic pile frame (5-4) to be telescopic and a lifting platform (5-9) to be lifted and shifted; the pile driving assembly (6) comprises a box body fixed to the lifting platform (5-9), a bottom base (6-3) is installed at the bottom of the box body, a pipe sleeve (6-4) is installed at the lower part of the bottom base (6-3), a vibratory pile hammer (6-6) and a lifting hydraulic cylinder (6-8) for lifting the vibratory pile hammer (6-6) are arranged inside the box body, a hooking and unhooking hydraulic cylinder (6-7) is installed on the side wall of the vibratory pile hammer (6-6), and a detachable tamping assembly (7) is installed on the pipe sleeve (6-4).

2. The multifunctional pile driver according to claim 1, characterized in that: The multi-stage telescopic pile frame (5-4) is a three-stage telescopic pile frame, comprising a first-stage pile frame with an open top and a second-stage pile frame with a first-stage door-type. The bottom platform (5-1) is fixedly installed at the bottom of the first-stage pile frame. A rotating connection seat (5-8) is installed at the lower rear of the first-stage pile frame. A flip connection seat (5-7) is installed at the middle rear of the first-stage pile frame. The rotating connection seat (5-8) is hingedly connected to the front of the supporting base frame (3) by a rotating shaft (8). The rear end of the cylinder body of the flip hydraulic cylinder (9) is hingedly connected to the supporting base frame (3), and the front end of the piston rod is hingedly connected to the middle of the flip connection seat (5-7).

3. The multifunctional pile driver according to claim 2, characterized in that: The lifting drive assembly of the multi-stage telescopic pile frame (5-4) comprises a lifting hydraulic cylinder (5-6) and two groups of chains (5-5). A connecting seat is installed on the top of the secondary pile frame and the tertiary pile frame. The lower end of the cylinder body of the lifting hydraulic cylinder (5-6) is hingedly connected to the bottom platform (5-1), and the upper end of the piston rod is hingedly connected to the connecting seat of the secondary pile frame. Sprocket wheels are installed on the connecting seats of the secondary pile frame and the tertiary pile frame. One end of one group of chains (5-5) is fixedly connected to the bottom platform (5-1), the middle part bypasses the sprocket wheel on the secondary pile frame, and the other end is fixedly connected to the bottom of the secondary pile frame. One end of the other group of chains (5-5) is fixedly connected to the top of the secondary pile frame, the middle part bypasses the sprocket wheel on the tertiary pile frame, and the other end is fixedly connected to the lifting platform (5-9).

4. The multifunctional pile driver according to claim 3, characterized in that: A detachable pile limiting plate (5-3) is also installed on the bottom platform (5-1). The pile limiting plate (5-3) is fixedly connected to the bottom platform (5-1) by bolts, and a pile accommodating notch that is consistent with the contour shape of the pile is provided at the front of the pile limiting plate (5-3).

5. The multifunctional pile driver according to claim 1, characterized in that: The box body of the pile driving assembly (6) comprises a lower box body (6-1) and an upper box body (6-2), the bottom base (6-3) is fixedly mounted on the bottom of the lower box body (6-1), the lifting hydraulic cylinder (6-8) is mounted on the top wall of the lower box body (6-1), the vibratory pile hammer (6-6) is located inside the lower box body (6-1), and a strip hole (6-5) is also provided on the side wall of the lower box body (6-1), and the cylinder body of the hook-and-unhook hydraulic cylinder (6-7) is located in the strip hole (6-5).

6. The multifunctional pile driver as claimed in claim 5, characterized in that: A vertically penetrating center hole is provided at the center of the vibratory pile hammer (6-6), a radially penetrating mounting hole is provided in the middle of the vibratory pile hammer (6-6), and a hook-and-unhook hydraulic cylinder (6-7) is installed and fixed in the mounting hole, a piston rod of the unhook hydraulic cylinder (6-7) serves as a hook-and-unhook locking pin, and a pin hole for hook-and-unhook is provided at the lower end of the piston rod of the lifting hydraulic cylinder (6-8).

7. The multifunctional pile driver according to any one of claims 1 to 6, characterized in that: The ramming assembly (7) comprises a cylindrical ramming column, a ramming pressure plate is installed at the lower end of the ramming column, an external thread portion is provided at the upper end of the ramming column, an internal thread is provided on the inner wall of the pipe sleeve (6-4), and the upper end of the ramming column is threadedly connected to the pipe sleeve (6-4).

8. The multifunctional pile driver according to any one of claims 1 to 6, characterized in that: A mounting groove is provided on the front top of the construction vehicle (1); the supporting chassis (3) comprises a supporting frame (3-1); the supporting frame (3-1) is mounted and fixed in the mounting groove by connecting legs (3-2) located at four corners.

9. The multifunctional pile driver according to any one of claims 1 to 6, characterized in that: The support frame (4) comprises a rear crossbeam (4-1) and a front left crossbeam (4-3) and a front right crossbeam (4-2) which are fixedly mounted on the support base frame (3); the front left crossbeam (4-3) and the front right crossbeam (4-2) are arranged in a V shape and the rear ends are fixedly connected to the middle of the rear crossbeam (4-1); the rear crossbeam (4-1) and the front left crossbeam (4-3) and the front right crossbeam (4-2) are all C-shaped steels and the grooves are oriented downwards; a supporting hydraulic cylinder (4-4) is installed in the grooves of each crossbeam; the rear end of the cylinder body of the supporting hydraulic cylinder (4-4) is hingedly connected to the end of the crossbeam where it is located.

Images