阅读说明：本技术 一种沉桩和打桩系统及使用该系统的沉桩和打桩施工方法 (Pile sinking and piling system and pile sinking and piling construction method using same ) 是由 陆军 麦志辉 吴平平 李光远 张静波 马振军 邓达紘 陈�峰 吴韩 徐天殷 刘会 于 2020-05-26 设计创作，主要内容包括：本发明一种沉桩和打桩系统及使用该系统的沉桩和打桩施工方法,沉桩和打桩系统包括抱桩装置、频率传感器、PLC控制器、液压控制端和锤芯,频率传感器用于检测桩腿的振动频率并将数据发送给PLC控制器；PLC控制器用于接收数据并分析,且根据分析结果发送控制信号至液压控制端；液压控制端用于控制锤芯；沉桩和打桩施工方法则使用该系统。本发明仅采用了锤芯即可对桩腿进行沉桩作业和打桩作业,从而省去了使用振动锤,简化了工作步骤,提高了工作效率；频率传感器可以更好地对沉桩作业和打桩作业的进行监测,及时发现问题,方便工作人员对故障问题进行排查,从而保障了沉桩作业和打桩作业的顺利进行,且降低了施工过程中存在的风险。(The invention relates to a pile sinking and piling system and a pile sinking and piling construction method using the same, wherein the pile sinking and piling system comprises a pile embracing device, a frequency sensor, a PLC (programmable logic controller), a hydraulic control end and a hammer core, wherein the frequency sensor is used for detecting the vibration frequency of a pile leg and sending data to the PLC; the PLC is used for receiving and analyzing the data and sending a control signal to the hydraulic control end according to the analysis result; the hydraulic control end is used for controlling the hammer core; pile sinking and piling construction methods use the system. The pile sinking operation and the pile driving operation can be carried out on the pile leg only by adopting the hammer core, so that a vibration hammer is omitted, the working steps are simplified, and the working efficiency is improved; the frequency sensor can better monitor pile sinking operation and pile driving operation, find problems in time and facilitate the troubleshooting of working personnel, thereby ensuring the smooth operation of pile sinking operation and pile driving operation and reducing the risk in the construction process.)

1. A pile sinking and driving system, characterized by: the pile gripper comprises a pile holding device, a frequency sensor, a PLC (programmable logic controller), a hydraulic control end and a hammer core;

the pile embracing device is sleeved on the pile leg;

the frequency sensor is arranged on the pile embracing device and connected with the PLC through a data wire harness, and the frequency sensor is used for detecting the vibration frequency of the pile leg and sending data to the PLC;

the PLC is connected with the hydraulic control end through a data wire harness and is used for receiving and analyzing data sent by the frequency sensor and sending a control signal to the hydraulic control end according to an analysis result;

the hydraulic control end is used for controlling and adjusting the piling action and frequency of the hammer core.

2. A pile sinking and driving system according to claim 1, wherein: still including setting up distance sensor on the pile embracing device, distance sensor with the PLC controller passes through the data pencil and connects, distance sensor is used for detecting the horizontal position distance of spud leg and with data transmission to the PLC controller.

3. A pile sinking and driving system according to claim 1, wherein: the pile embracing device comprises a pile sleeve and a pile embracing device, wherein the pile embracing device comprises a thread adjusting rod and a locking part;

the pile sleeve is sleeved on the pile leg, and a threaded hole is formed in the side wall of the pile sleeve;

the locking portion is arranged at one end of the thread adjusting rod, the thread adjusting rod can rotate relative to the locking portion, the locking portion is located in the pile sleeve and abutted to the pile leg, and the thread adjusting rod penetrates through the side wall of the pile sleeve and is in threaded connection with the threaded hole.

4. A pile sinking and driving system according to claim 3, wherein: one end of the locking part, which is abutted against the pile leg, is provided with inverted teeth.

5. A pile sinking and driving system according to claim 3, wherein: the pile embracing device is provided with a plurality of pile embracing devices, and the pile embracing devices are arranged around the circumference direction of the pile sleeve in an evenly distributed mode.

6. A pile sinking and driving system according to claim 1, wherein: the pile driving hammer comprises a pile holding device, a pile driving hammer body and a pile driving hammer body, wherein the pile driving hammer body is arranged above the pile holding device and comprises a hammer shell, a secondary driving device, a damping device and a hammer base; the shock absorption device is arranged in the hammer base, and the shock absorption device and the hammer base are sleeved on the replacing hammer; the replacement pile is positioned right above the pile leg; the hammer base is located right above the pile embracing device and right below the hammer shell.

7. A pile sinking and driving system according to claim 6, wherein: the damping device comprises a damping ring and a hydraulic damper, the damping ring is provided with a mounting hole along the striking direction of the hammer core, and the hydraulic damper is arranged in the mounting hole.

8. The pile sinking and piling construction method is characterized in that: use of a pile sinking and driving system according to claim 2, comprising the steps of:

the method comprises the following steps: the hydraulic control end controls the hammer core to carry out pile sinking operation on the pile leg;

step two: the frequency sensor detects the vibration frequency of the pile leg in the pile sinking operation in real time and transmits data to the PLC;

step three: the PLC receives and analyzes data sent by the frequency sensor, and if the frequency waveform is abnormal, a control signal is sent to the hydraulic control end, so that the hydraulic control end controls the hammer core to stop pile sinking operation;

step four: and if the frequency waveform becomes small and stable, the hydraulic control end controls the hammer core to carry out piling operation.

9. The pile sinking and driving construction method according to claim 7, wherein: in the pile sinking operation and pile driving operation processes, the distance sensor detects the horizontal position distance of the pile leg in real time and sends data to the PLC; and the PLC analyzes the data sent by the distance sensor, and if the data are abnormal, sends a control signal to the hydraulic control end to control the hammer core to stop working.

10. The pile sinking and driving construction method according to claim 7, wherein: in the piling operation process, the frequency sensor detects the vibration frequency of the pile leg in the piling operation in real time and transmits data to the PLC; and the PLC receives and analyzes the data sent by the frequency sensor, and sends a control signal to the hydraulic control end if the frequency waveform is abnormal, so that the hydraulic control end controls the hammer core to stop piling operation.

Technical Field

The invention relates to the technical field of pile driving and pile sinking construction, in particular to a pile sinking and piling system and a pile sinking and piling construction method using the same.

Background

In construction work such as marine work, it is generally necessary to drive the pile legs into the ground in order to make the foundation of the building strong. In the prior art, a hydraulic pile driving hammer is generally used for driving the pile leg, but before pile driving operation, a vibration hammer is also used for sinking the pile leg. In pile sinking operation, a vibration hammer is usually adopted, and the pile leg is sunk to a certain depth through the low-frequency vibration of the vibration hammer, so that an initial fixing effect is realized on the pile leg. When the pile leg is sunk into the soil to a certain depth, the hydraulic pile hammer is used for piling the pile leg, so that the pile leg is sunk to the specified depth. In the prior art, the steps of pile sinking and piling are complicated, and the working efficiency is low; and the working conditions during pile sinking and piling are not well monitored.

Disclosure of Invention

The invention aims to provide a pile sinking and piling system and a pile sinking and piling construction method using the same, which aim to solve the technical problems that the steps of pile sinking and piling operation are complicated, the working efficiency is low and the working state in the pile sinking and piling process is not well monitored in the prior art.

In order to achieve the purpose, the invention provides a pile sinking and piling system, which comprises a pile embracing device, a frequency sensor, a PLC (programmable logic controller), a hydraulic control end and a hammer core, wherein the pile embracing device comprises a pile driving device, a pile driving device and a pile driving device;

the pile embracing device is sleeved on the pile leg;

the frequency sensor is arranged on the pile embracing device and connected with the PLC through a data wire harness, and the frequency sensor is used for detecting the vibration frequency of the pile leg and sending data to the PLC;

the PLC is connected with the hydraulic control end through a data wire harness and is used for receiving and analyzing data sent by the frequency sensor and sending a control signal to the hydraulic control end according to an analysis result;

the hydraulic control end is used for controlling and adjusting the piling action and frequency of the hammer core.

Preferably, still including setting up distance sensor on the pile embracing device, distance sensor with the PLC controller passes through data pencil and connects, distance sensor is used for detecting the horizontal position distance of spud leg and with data transmission to the PLC controller.

Preferably, the pile embracing device comprises a pile sleeve and a pile embracing device, wherein the pile embracing device comprises a thread adjusting rod and a locking part;

the pile sleeve is sleeved on the pile leg, and a threaded hole is formed in the side wall of the pile sleeve;

the locking portion is arranged at one end of the thread adjusting rod, the thread adjusting rod can rotate relative to the locking portion, the locking portion is located in the pile sleeve and abutted to the pile leg, and the thread adjusting rod penetrates through the side wall of the pile sleeve and is in threaded connection with the threaded hole.

Preferably, one end of the locking part, which is abutted against the pile leg, is provided with inverted teeth.

Preferably, the pile embracing device is provided with a plurality of pile embracing devices, and a plurality of pile embracing devices are arranged around the circumferential direction of the pile sleeve in an evenly distributed manner.

Preferably, the pile driving hammer further comprises a pile driving hammer body arranged above the pile embracing device, wherein the pile driving hammer body comprises a hammer shell, a secondary driving device, a damping device and a hammer base; the shock absorption device is arranged in the hammer base, and the shock absorption device and the hammer base are sleeved on the replacing hammer; the replacement pile is positioned right above the pile leg; the hammer base is located right above the pile embracing device and right below the hammer shell.

Preferably, the damping device comprises a damping ring and a hydraulic damper, the damping ring is provided with a mounting hole along the striking direction of the hammer core, and the hydraulic damper is arranged in the mounting hole.

To achieve the above object, the present invention also provides a pile sinking and driving construction method using the pile sinking and driving system as described above, comprising the steps of:

the method comprises the following steps: the hydraulic control end controls the hammer core to carry out pile sinking operation on the pile leg;

step two: the frequency sensor detects the vibration frequency of the pile leg in the pile sinking operation in real time and transmits data to the PLC;

step three: the PLC receives and analyzes data sent by the frequency sensor, and if the frequency waveform is abnormal, a control signal is sent to the hydraulic control end, so that the hydraulic control end controls the hammer core to stop pile sinking operation;

step four: and if the frequency waveform becomes small and stable, the hydraulic control end controls the hammer core to carry out piling operation.

Preferably, in the pile sinking operation and pile driving operation processes, the distance sensor detects the horizontal position distance of the pile leg in real time and sends data to the PLC; and the PLC analyzes the data sent by the distance sensor, and if the data are abnormal, sends a control signal to the hydraulic control end to control the hammer core to stop working.

Preferably, in the piling operation process, the frequency sensor detects the vibration frequency of the pile leg in the piling operation in real time and transmits data to the PLC controller; and the PLC receives and analyzes the data sent by the frequency sensor, and sends a control signal to the hydraulic control end if the frequency waveform is abnormal, so that the hydraulic control end controls the hammer core to stop piling operation.

The invention relates to a pile sinking and piling system and a pile sinking and piling construction method using the same, which have the following beneficial effects:

1. according to the technical scheme, pile sinking operation and pile driving operation can be carried out on the pile leg only by adopting the hammer core, so that a vibration hammer is omitted, the working steps are simplified, and the working efficiency is improved; the hammer core gives consideration to pile sinking and piling operation, and the maximization of the function is realized.

2. Set up frequency sensor with distance sensor can monitor pile sinking operation and pile driving operation better, and the problem is in time discovered, makes things convenient for the staff to investigate the trouble problem to guarantee going on smoothly of pile sinking operation and pile driving operation, and reduced the risk that exists in the work progress.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the frame construction of the pile sinking and driving system of the present invention;

FIG. 2 is a schematic diagram of the pile sinking and driving system of the present invention;

FIG. 3 is a schematic cross-sectional view of the pile hammer body of the present invention;

fig. 4 is a schematic cross-sectional view of the pile embracing device assembled with a pile leg according to the present invention;

FIG. 5 is a schematic view of a pile gripper according to the present invention;

FIG. 6 is a schematic cross-sectional view of the pile driving hammer body of the present invention with the hammer housing removed;

FIG. 7 is an exploded view of the body of the pile hammer of the present invention;

FIG. 8 illustrates a first step of the pile sinking and piling method of the present invention;

fig. 9 shows the second step of the pile sinking and piling method of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Pile embracing device	5	Hammer core
11	Pile sleeve	6	Pile leg
				111	Threaded hole	7	Distance sensor
12	Pile gripper	8	Pile hammer body
				121	Screw thread adjusting rod	81	Hammer case
122	Locking part	82	Tibet for replacing
				1221	Inverted tooth	83	Shock-absorbing device
2	Frequency sensor	831	Shock-absorbing ring
				3	PLC controller	8311	Mounting hole
4	Hydraulic control terminal	832	Hydraulic shock absorber
						84	Hammer base

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 7, a pile sinking and piling system comprises a pile embracing device 1, a frequency sensor 2, a PLC controller 3, a hydraulic control end 4 and a hammer core 5;

the pile embracing device 1 is sleeved on the pile leg 6;

the frequency sensor 2 is arranged on the pile embracing device 1 and connected with the PLC 3 through a data wire harness, and the frequency sensor 2 is used for detecting the vibration frequency of the pile leg 6 and sending data to the PLC 3;

the PLC 3 is connected with the hydraulic control end 4 through a data wire harness, and the PLC 3 is used for receiving and analyzing data sent by the frequency sensor 2 and sending a control signal to the hydraulic control end 4 according to an analysis result;

the hydraulic control end 4 is used for controlling and adjusting the piling action and frequency of the hammer core 5.

The pile sinking and piling system is mainly applied to the pile sinking and piling construction process. Pile embracing device 1 cover is established on spud leg 6, frequency sensor 2 sets up pile embracing device 1 is last, and concrete fixed mounting is in pile embracing device 1's lateral wall is last. The frequency sensor 2 is connected with the PLC 3 through a data wire harness; in the process of pile sinking and piling of the pile leg 6 by the hammer core 5, the pile leg 6 can generate vibration with a certain frequency due to the impact of the hammer core 5 on the pile leg 6, and the vibration frequency is related to factors such as the striking strength and the striking frequency of the hammer core 5, the depth of the pile leg 6 sunk into soil and the like; the frequency sensor 2 is used to measure the vibration frequency of the leg 6 during the pile sinking or driving operation of the leg 6 by the hammer core 5 and transmit the measured data to the PLC controller 3 through a data harness. The PLC 3 receives and analyzes the data sent by the frequency sensor 2, and sends a control signal to the hydraulic control end 4 if the frequency waveform has a larger difference with the set frequency waveform or the frequency waveform has larger fluctuation; and after the hydraulic control end 4 receives the control signal, the hammer core 5 is controlled to stop the pile sinking or piling operation of the pile leg 6. If the detected frequency waveform has a large difference from the set frequency waveform or the frequency waveform fluctuates greatly, it means that pile sinking or piling operation cannot be performed smoothly and normally, and the pile leg 6 may be inclined or the hammer core 5 may not accurately impact on the pile leg 6, so that pile sinking or piling operation of the hammer core 5 needs to be stopped in time, and a fault is analyzed and eliminated in time, so that pile sinking or piling operation can be continued. The hammer core 5 is generally a hammer core controlled by a hydraulic system, and the hydraulic control end 4 is responsible for controlling the hammer core 5, including controlling the operation or stop of the hammer core 5, controlling the striking force, controlling the striking frequency and the like.

In construction work such as marine work, it is generally necessary to drive the pile legs into the ground in order to make the foundation of the building strong. In the prior art, a hydraulic pile driving hammer is generally used for driving the pile leg, but before pile driving operation, a vibration hammer is also used for sinking the pile leg. In pile sinking operation, a vibration hammer is usually adopted, and the pile leg is sunk to a certain depth through the low-frequency vibration of the vibration hammer, so that an initial fixing effect is realized on the pile leg. When the pile leg is sunk into the soil to a certain depth, the hydraulic pile hammer is used for piling the pile leg, so that the pile leg is sunk to the specified depth. In the prior art, the steps of pile sinking and piling are complicated, and the working efficiency is low; and the working conditions during pile sinking and piling are not well monitored. According to the technical scheme, the hydraulic control end 4 can control the striking frequency of the hammer core 5, so that low-frequency vibration pile sinking is realized; compared with the existing design, the technical scheme can carry out pile sinking operation and pile driving operation on the pile leg 6 only by adopting the hammer core 5, thereby omitting the use of a vibration hammer, simplifying the working steps and improving the working efficiency; the hammer core 5 gives consideration to pile sinking and piling operation, and maximizes the function. In the pile sinking process, if the frequency waveform detected by the frequency sensor 2 is small and stable, it can be determined that the pile sinking operation is basically completed, and then the striking strength and the striking frequency of the hammer core 5 can be adjusted to perform the next pile driving operation on the pile leg 6. In both the pile sinking operation process and the pile driving operation process, the frequency sensor 2 can detect the vibration frequency of the pile leg 6 in real time and send data to the PLC 3, so as to detect whether the working state of pile sinking or pile driving operation is normal in real time; if abnormity is detected, the PLC 3 can also send a control signal to the hydraulic control end 4 in time to control the hammer core 5 to stop working, so that a worker can conveniently analyze and troubleshoot the abnormal state, and can continue to control and adjust the hammer core 5 to carry out pile sinking or piling operation after the fault is cleared.

Further, still including setting up distance sensor 7 on the pile embracing device 1, distance sensor 7 with PLC controller 3 passes through data pencil and connects, distance sensor 7 is used for detecting the horizontal position distance of spud leg 6 and with data transmission to PLC controller 3.

The distance sensor 7 can be specifically installed and fixed on the outer wall of the pile embracing device 1, and the distance sensor 7 is mainly used for detecting whether the pile leg 6 is inclined in the pile sinking or piling process, so that the adjustment by a worker is facilitated. For example, a predetermined reference object may be provided beside the leg 6, and the distance sensor 7 may detect a horizontal distance between the leg 6 and the reference object, and if the distance becomes smaller, it means that the leg 6 is inclined toward the side where the reference object is located, and otherwise, it is inclined toward the side away from the reference object; if the leg 6 is inclined to the sides of the reference object, the distance value detected by the distance sensor 7 is not the distance between the leg 6 and the reference object, so the value changes greatly, thereby indicating that the leg 6 is inclined during pile sinking or piling. When the error between the value detected by the distance sensor 7 and the set value is large, the PLC controller 3 sends a control signal to the hydraulic control end 4 to control the hammer core 5 to stop working, so that a worker can adjust the hammer core. Set up distance sensor 7 can be better to pile sinking operation and pile operation monitor, in time discovers the problem, makes things convenient for the staff to investigate the trouble problem to guarantee going on smoothly of pile sinking operation and pile operation, and reduced the risk that exists in the work progress.

Further, the pile embracing device 1 comprises a pile sleeve 11 and a pile embracing device 12, wherein the pile embracing device 12 comprises a thread adjusting rod 121 and a locking part 122;

the pile sleeve 11 is sleeved on the pile leg 6, and a threaded hole 111 is formed in the side wall of the pile sleeve 11;

the locking portion 122 is disposed at one end of the thread adjusting rod 121, the thread adjusting rod 121 can rotate relative to the locking portion 122, the locking portion 122 is disposed in the pile sleeve 11 and abutted to the pile leg 6, and the thread adjusting rod 121 penetrates through a side wall of the pile sleeve 11 and is in threaded connection with the threaded hole 111.

The pile sleeve 11 is in a cylindrical shape which is through up and down, and the inner diameter of the pile sleeve 11 is smaller than the outer diameter of the pile leg 6; when the pile sleeve 11 is sleeved on the pile leg 6, a gap is reserved between the inner wall of the pile sleeve 11 and the outer wall of the pile leg 6. The pile gripper 12 comprises a threaded adjusting rod 121 and a locking part 122, the locking part 122 is arranged at one end of the threaded adjusting rod 121, and the locking part 122 is located in the pile sleeve 11 and is abutted to the outer wall of the pile leg 6; the other end of the screw thread adjusting rod 121 is located outside the pile sleeve 11, and the side wall of the pile sleeve 11 is provided with the screw thread hole 111, so that the screw thread adjusting rod 121 can penetrate through the inner wall of the pile sleeve 11 through the screw thread hole 111. The outer wall of the threaded adjusting rod 121 is provided with an external thread, the threaded hole 111 is internally provided with an internal thread matched with the external thread, and the threaded adjusting rod 121 is in threaded connection with the threaded hole 111; the threaded adjustment rod 121 can rotate relative to the locking portion 122, that is, one end of the threaded adjustment rod 121 is located in the locking portion 122, and when the threaded adjustment rod 121 rotates around the axis thereof, the locking portion 122 can be relatively stationary and cannot rotate along with the rotation of the threaded adjustment rod 121. When the thread adjusting rod 121 is screwed clockwise to rotate around the axis, the thread adjusting rod 121 moves towards one side of the pile leg 6, and the thread adjusting rod 121 abuts against the locking part 122, so that the locking part 122 moves towards one side of the pile leg 6 and abuts against the side wall of the pile leg 6, the more the thread adjusting rod 121 is screwed clockwise, the greater the force of the locking part 122 acting on the pile leg 6 is, the more the pile leg 6 is connected with the pile embracing device 1 stably; when the threaded adjusting rod 121 is screwed counterclockwise, the threaded adjusting rod 121 and the locking part 122 move to the side away from the leg 6, so that the locking part 122 no longer locks the leg 6. Of course, the thread adjusting rod 121 and the thread turning direction of the thread hole 111 may be changed to enable the thread adjusting to rotate counterclockwise, the pile gripper 12 moves toward one side of the pile leg 6, and when the pile gripper 12 moves toward one side away from the pile leg 6 during clockwise rotation.

Preferably, in order to facilitate screwing the threaded adjusting rod 121, a nut may be fixed at one end of the threaded adjusting rod 121 opposite to the screwed portion 122, and the threaded adjusting rod 121 is driven to rotate by screwing the nut; the screwing nut or the screw thread adjusting rod 121 can be directly operated manually by workers and can also be electrically operated by equipment.

The pile cover 11 is arranged to better stabilize the pile leg 6, and the pile embracing device 12 can stably connect the pile leg 6 with the pile cover 11. The pile gripper 12 is in a thread adjusting mode, and the force of locking the pile leg 6 by the pile gripper 12 can be adjusted by screwing the thread adjusting rod 121, so that the pile leg 6 can be firmly locked by the pile gripper 12; but also can be adjusted at any time according to the actual condition, and is very convenient and practical. Specifically, the frequency sensor 2 is disposed on the pile cover 11, so that the data measured by the frequency sensor 2 is more accurate when the pile cover 11, the pile gripper 12 and the pile leg 6 are connected more closely.

Further, the locking part 122 is provided with a pawl 1221 at the end abutting against the leg 6.

When the locking portion 122 abuts against the leg 6, specifically, the inverted tooth 1221 applies a locking force (i.e., a force of the pile gripper 12 acting on the leg 6) to the outer wall of the leg 6. The inverted teeth 1221 are arranged to reduce the contact area between the locking portion 122 and the leg 6, and when the pressure is constant, the smaller the stressed area is, the larger the pressure is, so that the locking portion 122 and the leg 6 can be attached more tightly under the condition of the same locking force; the presence of the inverted teeth 1221 also better prevents the legs 6 from slipping off.

Further, pile embracing device 1 is equipped with a plurality of pile embracing device 12, and is a plurality of pile embracing device 12 winds the circumferencial direction evenly distributed setting of pile cover 11.

The pile leg 6 and the pile sleeve 11 are both cylindrical, so that in order to enable the connection between the pile embracing device 1 and the pile leg 6 to be more stable, a plurality of pile embracing devices 12 are arranged in the embodiment; a plurality of pile embracing devices 12 are uniformly distributed on the pile sleeve 11, so that the pile embracing device 1 and the pile leg 6 are more balanced in connection force, and the pile leg 6 is more stable in pile sinking and piling processes.

Further, the pile driving hammer comprises a pile driving hammer body 8 arranged above the pile embracing device 1, wherein the pile driving hammer body 8 comprises a hammer shell 81, a pile head 82, a damping device 83 and a hammer base 84; the damping device 83 is arranged in the hammer base 84, and the damping device 83 and the hammer base 84 are sleeved on the secondary ram 82; the drop 82 is positioned right above the pile leg 6; the hammer base 84 is located right above the pile embracing device 1 and right below the hammer case 81.

The damping device 83 is installed in the hammer base 84 and sleeved on the secondary ram 82, and when pile sinking or piling generates vibration, the damping device 83 can effectively counteract a part of the rebound force of the secondary ram 82. The damping device 83 adopts hydraulic damping, the working principle of the hydraulic damping is that hydraulic oil in the shell of the damper repeatedly flows into another inner cavity from the inner cavity through narrow pores by reciprocating movement of the piston in the cylinder barrel of the damper, and at the moment, the friction between liquid and the inner wall and the internal friction of liquid molecules form damping force to vibration, so that the damping effect is achieved. The pile embracing device 1 is sleeved on the pile leg 6 and fixedly connected with the pile leg 6, and the hammer base 84 is positioned above the pile embracing device 1 and fixedly connected with the upper end of the pile embracing device 1; the hammer base 84 is thus connected to the leg 6. The drop 82 is positioned right above the pile leg 6; the hammer core 5 is positioned in the hammer shell 81 and is positioned right above the secondary striking head 82; the hammer core 5 moves up and down to strike the drop 82, and then the drop 82 transmits the striking force to the pile leg 6, thereby lowering the pile leg 6. The hammer case 81 is located above the hammer base 84 and both are connected and fixed. The pile hammer main body 8 is compact, and the vibration damping device 83 can well reduce the vibration generated when the hammer core 5 collides with the secondary ram 82, so that the noise is reduced.

For the projects such as bridges, wharfs, offshore platforms and the like, because the corresponding pile legs have large volumes and large pipe diameters, the low-frequency vibration hammer is generally adopted for pile sinking operation. The amplitude of the low-frequency pile sinking operation is large, the generated noise is also large, and the damping device 83 is arranged to reduce the noise generated when the hammer core 5 impacts the counterhammer 82.

Further, the damping device 83 includes a damping ring 831 and a hydraulic damper 832, the damping ring 831 is provided with a mounting hole 8311 along the striking direction of the hammer core 5, and the hydraulic damper 832 is disposed in the mounting hole 8311.

The damping ring 831 is a ring shape, a hollow portion is used for accommodating the tie rod 82, and the hydraulic damper 832 is disposed in the mounting hole 8311. The shock absorbing device 83 is compact and has a structure that facilitates its installation on the hammer base 84.

Preferably, a plurality of the hydraulic dampers 832 are uniformly annularly arranged on the damping ring 831. The damping device 83 includes a plurality of hydraulic dampers 832, a plurality of mounting holes 8311 are uniformly and circumferentially formed on the damping ring 831, and each mounting hole 8311 is provided with the hydraulic damper 832. The stability of the shock absorption effect can be further guaranteed by arranging the plurality of hydraulic shock absorbers 832, and the shock absorption coefficient and the damping can be independently adjusted by each hydraulic shock absorber 832, so that the hydraulic shock absorbers are more conveniently applied to different use conditions.

Construction is performed using a hydraulic pile driving hammer configured with the pile sinking and driving system described above, and as shown in fig. 8 to 9, the pile sinking and driving construction method includes the steps of:

the method comprises the following steps: the hydraulic control end 4 controls the hammer core 5 to carry out pile sinking operation on the pile leg 6;

step two: the frequency sensor 2 detects the vibration frequency of the pile leg 6 in the pile sinking operation in real time and transmits data to the PLC 3;

step three: the PLC 3 receives and analyzes the data sent by the frequency sensor 2, and if the frequency waveform is abnormal, a control signal is sent to the hydraulic control end 4, so that the hydraulic control end 4 controls the hammer core 5 to stop pile sinking operation;

step four: if the frequency waveform becomes small and stable, the hydraulic control end 4 controls the hammer core 5 to perform the piling operation.

As described above, in the piling construction, it is necessary to pile first and then pile. The construction method comprises the following steps:

s1: the hammer core 5 is controlled through the hydraulic control end 4, and the striking frequency of the hammer core 5 is adjusted, so that the low-frequency pile sinking operation of the hammer core 5 on the pile leg 6 is realized.

S2: in pile sinking operation, the frequency sensor 2 detects the vibration frequency of the pile leg 6 in real time and transmits data to the PLC controller 3 through a data harness.

S3: the PLC 3 receives the data sent by the frequency sensor 2, then carries out analysis and comparison, and if the frequency waveform is the same as the set frequency waveform or within the set range, the normal pile sinking operation is reflected, so that a control signal is not sent to the hydraulic control end 4; if the frequency waveform is abnormal, it is reflected that pile sinking operation has a fault (for example, the pile leg 6 is inclined), at this time, the PLC controller 3 sends a control signal to the hydraulic control end 4, so that the hydraulic control end 4 controls the hammer core 5 to stop pile sinking operation; if the hammer core 5 stops pile sinking operation, a worker needs to check the fault (if the pile leg 6 inclines, the pile leg needs to be righted). If the data detected by the frequency sensor 2 shows that the frequency waveform is small and stable, indicating that the low-frequency pile sinking operation is completed, the next pile sinking operation can be performed, and at this time, the PLC controller 3 sends a control signal to the hydraulic control end 4, so that the hydraulic control end 4 controls the hammer core 5 to stop the pile sinking operation.

S4: as described above, if the data detected by the frequency sensor 2 shows that the frequency waveform becomes small and stable, indicating that the low-frequency pile sinking operation has been completed, the hydraulic control terminal 4 can automatically control the hammer core 5 to perform the next pile sinking operation after controlling the hammer core 5 to stop the pile sinking operation; or after the operator checks that the hammer core is correct, the operator operates the hydraulic control end 4 to control the hammer core 5 to carry out the next piling operation.

In the embodiment, the total weight of the hydraulic pile driving hammer provided with the pile sinking and driving system is 680t, the diameter of the pile driving pipe end is 5.5-7.5m, the maximum generated impact energy is 4000kJ, the pile sinking frequency is 30-35 (30-35 beats per minute), the pile driving frequency is 24 (24 beats per minute), and the maximum striking energy is 4000KJ during pile driving.

Due to the adoption of the pile sinking and piling system, the hammer core 5 has the functions of both the vibration hammer and the piling hammer, so that the hammer core simultaneously plays roles in pile sinking and piling, and the maximization of functions is realized; the same equipment and system are adopted for pile sinking operation and pile driving operation, so that the working steps are simplified, and the working efficiency is improved. Based on foretell pile sinking and pile driving system, make pile sinking and pile driving operation more stable, and can real time monitoring operating condition, make things convenient for staff's technique to discover the problem, troubleshooting.

Further, in the pile sinking operation and the pile driving operation, the distance sensor 7 detects the horizontal position distance of the pile leg 6 in real time and sends data to the PLC controller 3; the PLC 3 analyzes the data sent by the distance sensor 7, and if an abnormality occurs, a control signal is sent to the hydraulic control end 4 to control the hammer core 5 to stop working.

As described above, the distance sensor 7 can detect whether the pile leg 6 is inclined in real time during pile sinking and piling work; if the data sent by the distance sensor 7 shows an abnormality, it is highly probable that the leg 6 is inclined (there may be a small probability event such as a machine failure), and at this time, the operation of the hammer core 5 needs to be stopped, and the worker does work after removing the failure. Set up distance sensor 7 can be better to pile sinking operation and pile operation monitor, in time discovers the problem, makes things convenient for the staff to investigate the trouble problem to guarantee going on smoothly of pile sinking operation and pile operation, and reduced the risk that exists in the work progress.

Further, in the piling operation process, the frequency sensor 2 detects the vibration frequency of the pile leg 6 in the piling operation in real time and transmits data to the PLC controller 3; the PLC 3 receives and analyzes the data sent by the frequency sensor 2, and if the frequency waveform is abnormal, a control signal is sent to the hydraulic control end 4, so that the hydraulic control end 4 controls the hammer core 5 to stop piling operation.

The frequency sensor 2 plays a role of detecting the vibration frequency of the pile leg 6 during pile sinking operation, so as to judge whether the operation is normal or not and whether the pile sinking operation is finished or not. In the process of piling operation, the frequency sensor 2 also detects the vibration frequency of the pile leg 6 in real time so as to judge whether the piling operation is normally carried out; if the frequency waveform is abnormal, the abnormal piling operation is indicated, and at the moment, the PLC 3 timely sends a control signal to the hydraulic control device to control the hammer core 5 to stop piling. Certainly, as the piling operation is performed, the pile leg 6 penetrates into the soil more and more, so that the frequency waveform of the pile leg 6 is changed gradually, and through the change, the worker can indirectly know the depth degree of the pile leg 6 and judge whether the piling operation is completed; the PLC controller 3 can also determine whether to complete the piling operation by detecting the change of the frequency waveform during the piling process, and then determine whether to send a control signal to enable the hydraulic control terminal 4 to control the hammer core 5 to stop piling. In the piling process, the frequency sensor 2 can also work in real time to ensure the smooth operation of piling operation and reduce the risk in the construction process.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.