CN114150666A - Electromagnetic pile driver and control method thereof - Google Patents
Electromagnetic pile driver and control method thereof Download PDFInfo
- Publication number
- CN114150666A CN114150666A CN202111338349.2A CN202111338349A CN114150666A CN 114150666 A CN114150666 A CN 114150666A CN 202111338349 A CN202111338349 A CN 202111338349A CN 114150666 A CN114150666 A CN 114150666A
- Authority
- CN
- China
- Prior art keywords
- pile
- hammer
- motor
- braking
- brake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The disclosure provides an electromagnetic pile driver and a control method thereof, and belongs to the technical field of pile driving equipment. The mounting shell of the electromagnetic pile driver is used as a mounting foundation for the frequency converter, the current switching cabinet, the driving part of the pile driving hammer, the braking part of the pile driving hammer and the pile driving hammer. The driving parts of the pile hammer and the braking parts of the pile hammer are both of motor structures, and the motors are limited by a frequency converter and a current switching cabinet. The brake motor does not have the current effect in the process of driving the pile hammer by the pile hammer motor, and the brake motor does not work. When the piling hammer needs to be braked, the current of the frequency converter only flows to the brake motor, and the piling hammer motor does not have current flowing to stop working. The possibility of mutual interference between the pile hammer motor and the brake motor is avoided, the possibility of damage of the electromagnetic pile driver is reduced, and the working safety and reliability of the electromagnetic pile driver are improved.
Description
Technical Field
The disclosure relates to the technical field of piling equipment, in particular to an electromagnetic pile driver and a control method thereof.
Background
The pile driver is a pile driving apparatus for hammering a pile body into soil, and includes at least a pile driving hammer, a pile driving hammer driving part and a pile driving hammer braking part, the pile driving hammer driving part drives the pile driving hammer to hammer the pile body into soil, and the pile driving hammer braking part is used for braking the pile driving hammer at an appropriate timing.
The pile hammer braking part usually comprises a hydraulic driving telescopic cylinder, one end of the telescopic cylinder faces the pile hammer, and the telescopic cylinder can play a braking role on the pile hammer when being extended. However, the hydraulically driven telescopic cylinder and the driving part of the pile hammer are two mutually independent parts, and in the actual working process of the pile hammer, the telescopic cylinder is easy to brake the pile hammer, but the driving part of the pile hammer is still driving the pile hammer, so that the braking part of the pile hammer is easy to damage, and the overall reliability of the pile driver is low.
Disclosure of Invention
The embodiment of the disclosure provides an electromagnetic pile driver and a control method thereof, which can reduce the risk of damage of the pile driver so as to improve the use reliability of the pile driver. The technical scheme is as follows:
the embodiment of the disclosure provides an electromagnetic pile driver, which comprises a frequency converter, a current switching cabinet, a mounting shell, a pile hammer driving part, a pile hammer braking part and a pile hammer, wherein the pile hammer driving part, the pile hammer braking part and the pile hammer are all connected with the mounting shell,
the output end of the frequency converter is communicated with the input end of the current switching cabinet, the output end of the current switching cabinet is respectively communicated with the pile hammer driving part and the pile hammer braking part, and the current switching cabinet is used for controlling the output current of the frequency converter to only flow to the pile hammer driving part or only flow to the pile hammer braking part,
the pile hammer driving part comprises a pile hammer motor connected with the mounting shell, a pile hammer stator of the pile hammer motor is connected with the current switching cabinet and the mounting shell, one end of a rotor of the pile hammer motor is connected with the pile hammer, the pile hammer braking part comprises a braking motor connected with the mounting shell, a braking stator of the braking motor is connected with the current switching cabinet and the mounting shell, and the rotor of the braking motor is used for braking the pile hammer.
Optionally, the pile hammer motor further includes a friction plate, the friction plate is coaxially connected to one end of the brake rotor close to the pile hammer, and the diameter of the friction plate is larger than that of the brake rotor.
Optionally, the current switching cabinet comprises a relay or a processor.
Optionally, the pile hammer braking part further comprises a braking connecting rod, the braking connecting rod is coaxially connected with the other end of the rotor of the pile hammer motor, the braking motor is a linear motor, and one end of the braking rotor of the braking motor is opposite to the braking connecting rod.
Optionally, the pile hammer braking component further includes a plug pin motor and a positioning plug pin rod, the plug pin motor and the positioning plug pin rod are linear motors, the peripheral wall of the braking connecting rod is provided with a plurality of pin holes distributed at intervals along the axial direction of the braking connecting rod, a plug pin stator of the plug pin motor is connected with the mounting shell, a plug pin rotor of the plug pin motor is coaxially connected with the positioning plug pin rod, and one end, far away from the plug pin motor, of the positioning plug pin rod is opposite to the peripheral wall of the braking connecting rod.
Optionally, the diameter of the pin hole is 1.8-3.5 times of the diameter of the positioning pin rod.
Optionally, the braking stator and the bolt stator are both in a tubular shape and are coaxially distributed at intervals, the braking rotor is coaxially and slidably inserted into the braking stator, the braking rotor is provided with a coaxial sliding hole, the positioning bolt rod is coaxially and slidably inserted into the sliding hole, and one end of the positioning bolt rod, which is far away from the braking connecting rod, is coaxially connected with the bolt rotor.
Optionally, the pile hammer braking part further includes a first insulating protection layer and a second insulating protection layer, the first insulating protection layer is coaxially connected with one end of the braking stator close to the plug pin stator, and the second insulating protection layer is coaxially connected with one end of the plug pin stator close to the braking stator.
The embodiment of the present disclosure provides an electromagnetic pile driver control method, where the electromagnetic pile driver control method is implemented by using the electromagnetic pile driver as described above, and the electromagnetic pile driver control method includes:
enabling a frequency converter of the electromagnetic pile driver and the current switching cabinet to transmit current to a pile driving hammer motor of the pile driving hammer driving part only, and enabling a rotor of the pile driving hammer motor to drive a pile driving hammer of the electromagnetic pile driving hammer to work;
enabling a frequency converter of the electromagnetic pile driver and the current switching cabinet to transmit current to only a brake motor of the pile driving hammer brake part, and powering off the pile driving hammer motor;
the braking motor brakes the pile hammer.
Optionally, the pile driving hammer brakes the pile driving hammer, comprising:
and according to the working speed and position of the pile driving hammer, the rotor of the brake motor applies acting force to the pile driving hammer to brake the pile driving hammer.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
the mounting shell of the electromagnetic pile driver is used as a mounting foundation for the frequency converter, the current switching cabinet, the driving part of the pile driving hammer, the braking part of the pile driving hammer and the pile driving hammer. The frequency converter is matched with the current switching cabinet, so that the output current of the frequency converter can be controlled to only flow to the driving part of the pile hammer or the current only flows to the braking part of the pile hammer. And meanwhile, the driving structures mainly used for driving in the driving part and the braking part of the pile hammer are both motor structures, so that the braking motor used for braking in the braking part of the pile hammer and the pile hammer motor used for driving the pile hammer in the driving part of the pile hammer can be guaranteed to be limited by the frequency converter and the current switching cabinet. The brake motor does not have the current effect in the process of driving the pile hammer by the pile hammer motor, and the brake motor does not work. When the piling hammer needs to be braked, the current of the frequency converter only flows to the brake motor, and the piling hammer motor does not have current flowing to stop working. The possibility of mutual interference between the pile hammer motor and the brake motor is avoided, the possibility of damage of the electromagnetic pile driver is reduced, and the working safety and reliability of the electromagnetic pile driver are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electromagnetic pile driver provided by an embodiment of the disclosure;
fig. 2 is a schematic diagram of a current switching cabinet provided by an embodiment of the present disclosure;
FIG. 3 is a schematic partial structural view of an electromagnetic pile driver provided by an embodiment of the present disclosure;
FIG. 4 is a flow chart of a control method of the electromagnetic pile driver provided by an embodiment of the disclosure;
fig. 5 is a flowchart of another control method of the electromagnetic pile driver provided by the embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.
For convenience of understanding, fig. 1 is provided for illustration, and fig. 1 is a schematic structural diagram of an electromagnetic pile driver provided by the embodiment of the present disclosure, and as can be seen from fig. 1, the embodiment of the present disclosure provides an electromagnetic pile driver including a frequency converter 1, a current switching cabinet 2, a mounting housing 3, and a pile driving part 4, a pile braking part 5 and a pile driving hammer 6 which are all connected with the mounting housing 3.
The output end of the frequency converter 1 is communicated with the input end of the current switching cabinet 2, the output end of the current switching cabinet 2 is respectively communicated with the pile driving hammer driving part 4 and the pile driving hammer braking part 5, and the current switching cabinet 2 is used for controlling the output current of the frequency converter 1 to only flow to the pile driving hammer driving part 4 or only flow to the pile driving hammer braking part 5.
The pile hammer driving part 4 comprises a pile hammer motor 41 connected with the mounting shell 3, a pile hammer stator 411 of the pile hammer motor 41 is connected with the current switching cabinet 2 and the mounting shell 3, one end of a pile hammer rotor 412 of the pile hammer motor 41 is connected with the pile hammer 6, the pile hammer braking part 5 comprises a braking motor 51 connected with the mounting shell 3, a braking stator 511 of the braking motor 51 is connected with the current switching cabinet 2 and the mounting shell 3, and the rotor of the braking motor 51 is used for braking the pile hammer 6.
The mounting shell 3 of the electromagnetic pile driver serves as a mounting base for the frequency converter 1, the current switching cabinet 2, the pile hammer driving part 4, the pile hammer braking part 5 and the pile hammer 6. The frequency converter 1 is matched with the current switch cabinet 2, and the output current of the frequency converter 1 can be controlled to only flow to the pile hammer driving part 4 or the current to only flow to the pile hammer braking part 5. Meanwhile, the driving structures of the pile hammer driving part 4 and the pile hammer braking part 5 are both motor structures, so that the braking motor 51 for braking in the pile hammer braking part 5 and the pile hammer motor 41 for driving the pile hammer 6 in the pile hammer driving part 4 are both limited by the frequency converter 1 and the current switching cabinet 2. The brake motor 51 is ensured to have no current function in the process that the pile driving hammer motor 41 drives the pile driving hammer 6, and the brake motor 51 does not work. When the pile hammer 6 needs to be braked, the current of the frequency converter 1 flows only to the brake motor 51, and the pile hammer motor 41 stops operating without the current flowing. The possibility of mutual interference between the pile hammer motor 41 and the brake motor 51 is avoided, the possibility of damage of the electromagnetic pile driver is reduced, and the working safety and reliability of the electromagnetic pile driver are improved.
The power of the pile driving hammer motor 41 and the power of the brake motor 51 are both derived from the current output from the inverter 1, and if there is no current output from the inverter 1, both the pile driving hammer motor 41 and the brake motor 51 are in a standby state. In fig. 1, the power switching cabinet and the frequency converter 1 are divided outside the installation shell 3, the power switching cabinet, the frequency converter 1 and the installation shell 3 are distributed at intervals, and in fact, the frequency converter 1 and the power switching cabinet can be installed in the installation shell 3, which is not limited by the present disclosure.
Also illustrated in figure 1 is a steel pile, the reference numeral 100.
Alternatively, the mounting housing 3 may comprise a cylindrical body, which may be annular in cross-section. Is convenient for preparation and installation.
In other implementations provided by the present disclosure, the mounting housing 3 may also be in other shapes or prepared in an openable and closable shape, and the cross section of the mounting housing 3 may be in a rectangular shape or other irregular shapes, which is not limited by the present disclosure.
Alternatively, the stator of each motor provided in the present disclosure and the mounting case 3 may be connected by bolts or a mating connection plate. The present disclosure is not so limited.
It should be noted that insulation protection is added between the stator and the mounting shell 3. For example, the stator is sleeved with an insulating ring, and the insulating ring is connected with the mounting shell 3 through a connecting piece. The use safety of the electromagnetic pile driver can be ensured.
For the convenience of understanding, a schematic diagram of a current switch cabinet 2 is provided herein, fig. 2 and fig. 2 are schematic diagrams of the current switch cabinet provided by the embodiment of the present disclosure, and as can be seen from fig. 2, the current switch cabinet 2 may include a box 21 and a first switch 22, a second switch 23 and a third switch 24 inside the box 21, the first switch 22 is connected to an output end of the frequency converter 1, the second switch 23 and the third switch 24 are connected in parallel to the first switch 22, and the second switch 23 and the third switch 24 are respectively connected to a stator of the pile hammer motor 41 and a stator of the brake motor 51.
As described above, the current switching cabinet 2 can be made to open the first switch 22 and cut off the connection between the frequency converter 1 and the pile hammer motor 41 and the brake motor 51, or can be made to close the first switch 22 and control the opening and closing of the second switch 23 and the third switch 24 to control the currents to be supplied to the pile hammer motor 41 and the brake motor 51, respectively. The current switching cabinet 2 always controls only one of the second switch 23 or the third switch 24 to be turned on, so that the working states of the pile hammer motor 41 and the brake motor 51 are mutually exclusive.
The processor may be used in conjunction with the sensor to detect and control the closing of the second switch 23 and the third switch 24.
Optionally, the current switching cabinet 2 may also comprise a relay or a processor.
The current switching cabinet 2 comprises a relay or a processor, and can facilitate the switching and control of the current.
Fig. 3 is a partial structural schematic diagram of the electromagnetic pile driver provided in the embodiment of the present disclosure, and as can be seen from fig. 3, the pile driving hammer motor 41 may further include a friction plate 413, the friction plate 413 is coaxially connected to one end of the brake rotor 512 close to the pile driving hammer 6, and a diameter of the friction plate 413 is larger than a diameter of the brake rotor 512.
The friction plate 413 is additionally arranged at one end, close to the pile driving hammer 6, of the brake rotor 512, the diameter of the friction plate 413 is larger than that of the brake rotor 512, the braking effect of the brake motor 51 on the pile driving hammer 6 can be improved, the brake motor 51 can brake the pile driving hammer 6 stably, the braking time is shortened, and the service efficiency of the electromagnetic pile driver is improved.
For example, the material of the friction plate 413 may be a resin-based friction material, a carbon fiber friction material, or a semi-metal friction material.
The material of the friction plate 413 is selected within the above range, so that the friction plate 413 can effectively brake the pile hammer 6, and meanwhile, the preparation cost of the friction plate 413 is not too high.
Optionally, the pile hammer braking part 5 further includes a braking connecting rod 513, the braking connecting rod 513 is coaxially connected to the other end of the rotor of the pile hammer motor 41, the braking motor 51 is a linear motor, and one end of the braking rotor 512 of the braking motor 51 faces the braking connecting rod 513.
The braking connecting rod 513 is added, the braking connecting rod 513 is coaxially connected with the piling hammer 6, and the braking connecting rod 513 is a force application object of the braking motor 51, so that the abrasion of the piling hammer 6 can be reduced, the use strength of the piling hammer 6 is ensured, and the service life of the piling hammer 6 is prolonged.
Optionally, the pile hammer braking part 5 further comprises a bolt motor 52 and a positioning bolt rod 53, the bolt motor 52 is a linear motor, the circumferential wall of the braking connecting rod 513 is provided with a plurality of pin holes 5131 distributed at intervals along the axial direction of the braking connecting rod 513, a bolt stator 522 of the bolt motor 52 is connected with the mounting shell 3, a bolt rotor 521 of the bolt motor 52 is coaxially connected with the positioning bolt rod 53, and one end of the positioning bolt rod 53, far away from the bolt motor 52, is opposite to the circumferential wall of the braking connecting rod 513.
The bolt motor 52 in the form of a linear motor is added, the bolt rotor 521 of the bolt motor 52 can axially move in a telescopic manner and is matched with the positioning bolt rod 53 coaxially connected with the bolt rotor 521, and in the process of axial telescopic movement of the bolt rotor 521, the positioning bolt rod 53 also moves in an axial direction and can enter the pin hole 5131 in the brake connecting rod 513 to play a role in positioning the brake connecting rod 513 and the pile driving hammer 6 and lock the pile driving hammer 6 to prevent the working state of the pile driving hammer 6 from being changed by external force. The use safety and the reliability of the electromagnetic pile hammer 6 are improved.
It should be noted that in the implementation provided by the present disclosure, the pile hammer motor 41, the brake motor 51, and the latch motor 52 are all tubular linear motors. In other implementations provided by the present disclosure, the pile hammer motor 41, the brake motor 51, and the bolt motor 52 may be provided as other types of linear motors, which is not limited by the present disclosure.
Illustratively, the stator of the latch motor 52 may also be connected to the output of the current switching cabinet 2, and the current power of the latch motor 52 is derived from the frequency converter 1 only.
The power of the bolt motor 52, the power of the brake motor 51 and the power of the pile driving hammer motor 41 are all derived from the frequency converter 1, so that the pile driving hammer motor 41 and other motors can not work simultaneously and cannot interfere with each other, the possibility of damage of the electromagnetic pile driver due to mutual interference of the motors is reduced, and the use safety and the reliability of the electromagnetic pile driver are improved.
With reference to fig. 2, with the addition of the latch motor 52, a fourth switch 25 and a fifth switch 26 for connecting the latch motor 52 and the brake motor 51, respectively, may be added between the third switch 24 and the pile hammer driving unit 4.
The processor and the sensor are matched, so that the bolt motor 52 and the brake motor 51 cannot interfere with each other, and the use safety and the reliability of the electromagnetic pile driver are further improved.
In other implementations provided by the present disclosure, the latch motor 52 may also have its own power source, and the present disclosure is not limited thereto.
Optionally, the diameter of the pin hole 5131 is 1.8 to 3.5 times the diameter of the positioning pin rod 53.
The ratio of the diameter of the pin hole 5131 to the diameter of the positioning latch rod 53 is in the above range, so that the pin hole 5131 can have enough space to enter the positioning latch rod 53, and meanwhile, the gap between the pin hole 5131 and the positioning latch rod 53 is not too large to weaken the locking effect on the pile driving hammer 6 and the brake connecting rod 513.
Illustratively, the braking stators 511 and the latch stators 522 are both tubular and coaxially distributed at intervals, the braking rotor 512 is coaxially and slidably inserted into the braking stators 511, the braking rotor 512 has a coaxial sliding hole, the positioning latch rod 53 is coaxially and slidably inserted into the sliding hole, and one end of the positioning latch rod 53, which is far away from the braking connecting rod 513, is coaxially connected with the latch rotor 521.
The braking stators 511 and the bolt stators 522 are coaxial and distributed at intervals, and the braking rotors 512 in the braking stators 511 can normally axially move to realize braking on the braking connecting rods 513. The positioning latch rod 53 is slidably inserted into the latch stator 522, and one end of the positioning latch rod 53, which is far away from the brake link 513, is connected to a latch mover 521 inside the latch stator 522. On one hand, the space can be saved, on the other hand, the final braking stop position of the brake rotor 512 can be controlled to be located at the position of the brake connecting rod 513, the positioning bolt rod 53 can directly extend into the pin hole 5131 of the brake connecting rod 513, and in the axial direction of the pile hammer 6, the positions of the brake rotor 512 and the bolt rotor 521 do not need to be monitored simultaneously, so that the workload of a processor can be reduced, the precision requirement of the processor is reduced, and the preparation cost of the electromagnetic pile driver is reduced.
On the premise that the friction plate 413 is provided at the end of the brake mover 512, the friction plate 413 has an escape hole for allowing the positioning latch rod 53 to pass through, which is coaxial with the slide hole.
Alternatively, the axes of the braking stator 511 and the latch stator 522 are located in the radial direction of the braking connecting rod 513, so that stable braking of the hammer 6 can be ensured.
Illustratively, the minimum distance between the braking stator 511 and the latch stator 522 may be 5mm to 35 mm.
The minimum distance between the braking stator 511 and the latch stator 522 is within the above range, so that the braking stator 511 and the latch stator 522 are in an insulating state, and the space in the installation shell 3 is not occupied.
Optionally, the hammer braking unit 5 further comprises a first insulating shield 54 and a second insulating shield 55, the first insulating shield 54 being coaxially connected to the end of the braking stator 511 adjacent the bolt stator 522, and the second insulating shield 55 being coaxially connected to the end of the bolt stator 522 adjacent the braking stator 511.
The addition of the first insulating protection layer 54 and the second insulating protection layer 55 can further improve the safety of the brake stator 511 and the plug stator 522 in use, reduce the possibility of conduction or mutual influence between the brake stator 511 and the plug stator 522, and improve the safety and reliability of the electromagnetic pile driver as a whole.
In the electromagnetic pile driver, for example, the braking motor 51 and the bolt motor 52 may be provided in at least two numbers, and the braking electrodes correspond to the bolt motor 52 one by one. At least two brake motors 51 are equally spaced along the circumference of the brake connecting rod 513.
The at least two brake motors 51 correspond to the at least two bolt motors 52 one by one, and the at least two brake motors 51 are distributed at equal intervals along the circumferential direction of the brake connecting rod 513, so that the brake effect on the brake connecting rod 513 and the piling hammer 6 can be improved, and the brake efficiency is improved.
Only two brake motors 51 and two latch motors 52 are illustrated in fig. 3. In other implementations provided by the present disclosure, the number of the braking motors 51 and the latch motors 52 may be set to 3, 4, or 6. The present disclosure is not so limited.
As can be seen with reference to fig. 3, the pile driving hammer drive part 4 may further comprise a first displacement sensor 42, the first displacement sensor 42 being adapted to detect a displacement of the pile driving hammer 6.
The addition of the first displacement sensor 42 allows real-time monitoring of the actual displacement of the pile driving hammer 6 and the braking force of the brake motor 51 can be controlled again based on the data of the first displacement sensor 42. The situation that the braking force is too large or too small is reduced, and the use safety and the reliability of the electromagnetic pile driver are improved.
Illustratively, the pile hammer brake part 5 may further include a second displacement sensor 56 and a third displacement sensor 57, the second displacement sensor 56 being configured to detect a displacement of the brake mover 512, and the third displacement sensor 57 being configured to detect a displacement of the latch mover 521.
The addition of the second displacement sensor 56 and the third displacement sensor 57 may facilitate control of the braking effect and the locking effect.
Fig. 4 is a flowchart of a control method of the electromagnetic pile driver according to an embodiment of the present disclosure, and as can be seen from fig. 4, the embodiment of the present disclosure provides a control method of the electromagnetic pile driver, where the control method of the electromagnetic pile driver is implemented by using the electromagnetic pile driver as described above, and the control method of the electromagnetic pile driver includes:
s101: the frequency converter and the current switching cabinet of the electromagnetic pile driver only transmit current to the pile driving hammer motor of the pile driving hammer driving part, and the rotor of the pile driving hammer motor drives the pile driving hammer of the electromagnetic pile driving hammer to work.
S102: the frequency converter and the current switching cabinet of the electromagnetic pile driver are enabled to transmit current to the brake motor of the pile driving hammer brake part only, and the pile driving hammer motor is powered off.
S103: the braking motor brakes the pile hammer.
The mounting shell of the electromagnetic pile driver is used as a mounting foundation for the frequency converter, the current switching cabinet, the driving part of the pile driving hammer, the braking part of the pile driving hammer and the pile driving hammer. The frequency converter is matched with the current switching cabinet, so that the output current of the frequency converter can be controlled to only flow to the driving part of the pile hammer or the current only flows to the braking part of the pile hammer. And meanwhile, the driving structures mainly used for driving in the driving part and the braking part of the pile hammer are both motor structures, so that the braking motor used for braking in the braking part of the pile hammer and the pile hammer motor used for driving the pile hammer in the driving part of the pile hammer can be guaranteed to be limited by the frequency converter and the current switching cabinet. The brake motor does not have the current effect in the process of driving the pile hammer by the pile hammer motor, and the brake motor does not work. When the piling hammer needs to be braked, the current of the frequency converter only flows to the brake motor, and the piling hammer motor does not have current flowing to stop working. The possibility of mutual interference between the pile hammer motor and the brake motor is avoided, the possibility of damage of the electromagnetic pile driver is reduced, and the working safety and reliability of the electromagnetic pile driver are improved.
Fig. 5 is a flowchart of another control method of the electromagnetic pile driver provided by the embodiment of the disclosure, and with the electromagnetic pile driver shown in fig. 3 as a controlled device, referring to fig. 5, the electromagnetic pile driver control method may further include:
s201: the frequency converter and the current switching cabinet of the electromagnetic pile driver only transmit current to the pile driving hammer motor of the pile driving hammer driving part, and the rotor of the pile driving hammer motor drives the pile driving hammer of the electromagnetic pile driving hammer to work.
S202: the frequency converter and the current switching cabinet of the electromagnetic pile driver are enabled to transmit current to the brake motor of the pile driving hammer brake part only, and the pile driving hammer motor is powered off.
S203: according to the working speed and position of the pile hammer, the rotor of the brake motor applies acting force to the brake connecting rod so as to brake the pile hammer connected with the brake connecting rod.
In step S203, when the pile hammer needs to be braked, the speed of the pile hammer at the moment when the motor of the pile hammer is powered off can be obtained through the motor of the pile hammer; acquiring the position of the pile hammer at the moment when the motor of the pile hammer is powered off through a first displacement sensor; acquiring the distance between the brake rotor and the pin hole according to the position of the pile driving hammer and the position of the brake rotor, wherein the distance is the distance in the axial direction of the pile driving hammer; determining the acting force applied on the brake connecting rod by the brake rotor according to the speed of the pile hammer and the distance between the brake rotor and the pin hole; the brake rotor applies a force on the brake connecting rod to brake the pile driving hammer.
By adopting the steps, the distance between the brake rotor and the pin hole can be effectively controlled, and the work of the positioning bolt rod coaxial with the brake rotor is facilitated.
Illustratively, the speed of the pile driving hammer is 3.5-5.2 m/s, the distance between the brake rotor and the pin hole is 30-85 mm, and the acting force applied by the brake rotor on the brake connecting rod is 21-27N. The stable braking of the positioning bolt rod can be ensured.
S204: and the positioning bolt rod is controlled to be inserted into a pin hole on the braking connecting rod so as to lock the piling hammer.
Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure.
Claims (10)
1. An electromagnetic pile driver is characterized by comprising a frequency converter (1), a current switching cabinet (2), a mounting shell (3), a pile driving hammer driving part (4), a pile driving hammer braking part (5) and a pile driving hammer (6) which are all connected with the mounting shell (3),
the output end of the frequency converter (1) is communicated with the input end of the current switching cabinet (2), the output end of the current switching cabinet (2) is respectively communicated with the pile hammer driving part (4) and the pile hammer braking part (5), the current switching cabinet (2) is used for controlling the output current of the frequency converter (1) to only flow to the pile hammer driving part (4) or only flow to the pile hammer braking part (5),
the pile hammer driving part (4) comprises a pile hammer motor (41) connected with the installation shell (3), a pile hammer stator (411) of the pile hammer motor (41) is connected with the current switching cabinet (2) and the installation shell (3), one end of a rotor of the pile hammer motor (41) is connected with the pile hammer (6), the pile hammer braking part (5) comprises a braking motor (51) connected with the installation shell (3), a braking stator (511) of the braking motor (51) is connected with the current switching cabinet (2) and the installation shell (3), and the rotor of the braking motor (51) is used for braking the pile hammer (6).
2. The electromagnetic pile driver of claim 1, characterized in that the pile driver motor (41) further comprises a friction plate (413), the friction plate (413) being coaxially connected at an end of a brake mover (512) of the brake motor (51) close to the pile driver (6), the friction plate (413) having a diameter larger than the diameter of the brake mover (512).
3. Electromagnetic pile driver according to claim 1, characterised in that the current switching cabinet (2) comprises a relay or a processor.
4. The electromagnetic pile driver of any one of claims 1-3, wherein the pile hammer brake part (5) further comprises a brake connecting rod (513), the brake connecting rod (513) is coaxially connected with the other end of the rotor of the pile hammer motor (41), the brake motor (51) is a linear motor, and one end of the brake rotor (512) of the brake motor (51) faces the brake connecting rod (513).
5. The electromagnetic pile driver as recited in claim 4, characterised in that the pile hammer braking part (5) further comprises a bolt motor (52) and a positioning bolt rod (53) which are linear motors, the peripheral wall of the braking connecting rod (513) is provided with a plurality of pin holes (5131) which are distributed at intervals along the axial direction of the braking connecting rod (513), a bolt stator (522) of the bolt motor (52) is connected with the mounting shell (3), a bolt rotor (521) of the bolt motor (52) is coaxially connected with the positioning bolt rod (53), and one end of the positioning bolt rod (53) far away from the bolt motor (52) is opposite to the peripheral wall of the braking connecting rod (513).
6. Electromagnetic pile driver according to claim 5, characterised in that the diameter of the pin hole (5131) is 1.8-3.5 times the diameter of the positioning pin rod (53).
7. The electromagnetic pile driver as recited in claim 5, characterized in that the brake stator (511) and the latch stator (522) are both tubular and coaxially spaced apart, the brake rotor (512) is coaxially and slidably inserted in the brake stator (511), the brake rotor (512) has a coaxial sliding hole, the positioning latch rod (53) is coaxially and slidably inserted in the sliding hole, and one end of the positioning latch rod (53) away from the brake connecting rod (513) is coaxially connected with the latch rotor (521).
8. The electromagnetic pile driver of claim 6, characterized in that the pile hammer braking part (5) further comprises a first insulating shield (54) and a second insulating shield (55), the first insulating shield (54) being coaxially connected to the end of the braking stator (511) near the latch stator (522), the second insulating shield (55) being coaxially connected to the end of the latch stator (522) near the braking stator (511).
9. An electromagnetic pile driver control method, which is implemented by using an electromagnetic pile driver according to any one of claims 1 to 8, the electromagnetic pile driver control method comprising:
enabling a frequency converter of the electromagnetic pile driver and the current switching cabinet to transmit current to a pile driving hammer motor of the pile driving hammer driving part only, and enabling a rotor of the pile driving hammer motor to drive a pile driving hammer of the electromagnetic pile driving hammer to work;
enabling a frequency converter of the electromagnetic pile driver and the current switching cabinet to transmit current to only a brake motor of the pile driving hammer brake part, and powering off the pile driving hammer motor;
the braking motor brakes the pile hammer.
10. The electromagnetic pile driver control method of claim 9, wherein the pile driving hammer brakes the pile driving hammer, comprising:
and according to the working speed and position of the pile driving hammer, the rotor of the brake motor applies acting force to the pile driving hammer to brake the pile driving hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111338349.2A CN114150666B (en) | 2021-11-11 | 2021-11-11 | Electromagnetic pile driver and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111338349.2A CN114150666B (en) | 2021-11-11 | 2021-11-11 | Electromagnetic pile driver and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114150666A true CN114150666A (en) | 2022-03-08 |
| CN114150666B CN114150666B (en) | 2023-09-19 |
Family
ID=80460104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111338349.2A Active CN114150666B (en) | 2021-11-11 | 2021-11-11 | Electromagnetic pile driver and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114150666B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2581100A1 (en) * | 1985-04-29 | 1986-10-31 | Martelec | Electromagnetic driving ram |
| CN1087396A (en) * | 1992-11-27 | 1994-06-01 | 俄罗斯专利技术股份有限公司 | Hydrolic driver |
| CN1563661A (en) * | 2004-04-15 | 2005-01-12 | 吴敏 | Hoisting and draughting mechanism in ram machine for screw thread pile |
| US20070074881A1 (en) * | 2003-05-12 | 2007-04-05 | Bermingham Construction Limited | Pile driving control apparatus and pile driving system |
| CN101275398A (en) * | 2008-03-29 | 2008-10-01 | 周荣珍 | Pile hammer |
| CN203012424U (en) * | 2012-10-24 | 2013-06-19 | 卢世军 | Punching pile driver automatic control system |
| CN105604537A (en) * | 2016-02-29 | 2016-05-25 | 周兆弟 | Electric control system of comprehensive pile driver drill pipe and electric control method thereof |
| CN106948765A (en) * | 2017-04-09 | 2017-07-14 | 陶德明 | The brake apparatus of center-rotary joint in stake holes |
| US20170247851A1 (en) * | 2014-08-15 | 2017-08-31 | Ecosmart Limited | Pneumatic or hydraulically operated linear driver |
| RU2630026C1 (en) * | 2016-05-24 | 2017-09-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Морской государственный университет имени адмирала Г.И. Невельского" | Electromagnetic hammer with linear electric motor drive |
| CN108474362A (en) * | 2016-01-15 | 2018-08-31 | 阿尔特弥斯智能动力有限公司 | Include the hydraulic test and operating method of synthesis commutation machine |
| CN109162277A (en) * | 2018-09-30 | 2019-01-08 | 中船重工电机科技股份有限公司 | Marine Electric-driven piling machine based on linear motor |
| CN212772339U (en) * | 2020-07-30 | 2021-03-23 | 北京中联勘工程技术有限责任公司 | Pile driver for building civil engineering |
| CN113202093A (en) * | 2021-04-28 | 2021-08-03 | 广东力源液压机械有限公司 | Control method of linear electromagnetic pile driver |
| WO2021156314A1 (en) * | 2020-02-03 | 2021-08-12 | A Hansson Holding Ab | Piledriver modules, adaptive pile driver system and corresponding method |
| CN113339342A (en) * | 2021-06-08 | 2021-09-03 | 山东临工工程机械有限公司 | Pile driver assists utensil hydraulic system and hydraulic pile driver |
-
2021
- 2021-11-11 CN CN202111338349.2A patent/CN114150666B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2581100A1 (en) * | 1985-04-29 | 1986-10-31 | Martelec | Electromagnetic driving ram |
| CN1087396A (en) * | 1992-11-27 | 1994-06-01 | 俄罗斯专利技术股份有限公司 | Hydrolic driver |
| US20070074881A1 (en) * | 2003-05-12 | 2007-04-05 | Bermingham Construction Limited | Pile driving control apparatus and pile driving system |
| CN1563661A (en) * | 2004-04-15 | 2005-01-12 | 吴敏 | Hoisting and draughting mechanism in ram machine for screw thread pile |
| CN101275398A (en) * | 2008-03-29 | 2008-10-01 | 周荣珍 | Pile hammer |
| CN203012424U (en) * | 2012-10-24 | 2013-06-19 | 卢世军 | Punching pile driver automatic control system |
| US20170247851A1 (en) * | 2014-08-15 | 2017-08-31 | Ecosmart Limited | Pneumatic or hydraulically operated linear driver |
| CN108474362A (en) * | 2016-01-15 | 2018-08-31 | 阿尔特弥斯智能动力有限公司 | Include the hydraulic test and operating method of synthesis commutation machine |
| CN105604537A (en) * | 2016-02-29 | 2016-05-25 | 周兆弟 | Electric control system of comprehensive pile driver drill pipe and electric control method thereof |
| RU2630026C1 (en) * | 2016-05-24 | 2017-09-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Морской государственный университет имени адмирала Г.И. Невельского" | Electromagnetic hammer with linear electric motor drive |
| CN106948765A (en) * | 2017-04-09 | 2017-07-14 | 陶德明 | The brake apparatus of center-rotary joint in stake holes |
| CN109162277A (en) * | 2018-09-30 | 2019-01-08 | 中船重工电机科技股份有限公司 | Marine Electric-driven piling machine based on linear motor |
| WO2021156314A1 (en) * | 2020-02-03 | 2021-08-12 | A Hansson Holding Ab | Piledriver modules, adaptive pile driver system and corresponding method |
| CN212772339U (en) * | 2020-07-30 | 2021-03-23 | 北京中联勘工程技术有限责任公司 | Pile driver for building civil engineering |
| CN113202093A (en) * | 2021-04-28 | 2021-08-03 | 广东力源液压机械有限公司 | Control method of linear electromagnetic pile driver |
| CN113339342A (en) * | 2021-06-08 | 2021-09-03 | 山东临工工程机械有限公司 | Pile driver assists utensil hydraulic system and hydraulic pile driver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114150666B (en) | 2023-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2810646C (en) | Two speed direct drive drawworks | |
| CN102112696B (en) | Draw-works for the maneuvering of drilling devices | |
| CN103201450A (en) | Rock drilling rig and method for transmission of rock drilling rig | |
| EP3467209B1 (en) | Excavation tool for making diaphragms and related excavation equipment | |
| CN108622814B (en) | The integrated hoister system of the major-minor brake of one kind and its control method | |
| CN111470440A (en) | Permanent magnet motor built-in mining explosion-proof lifting equipment | |
| CN203612858U (en) | High-efficiency intelligent safe petroleum drilling winch system | |
| CN106560439B (en) | Potential energy recycling system, control method and engineering mechanical equipment | |
| CN112041535A (en) | Direct drive system | |
| CN114150666A (en) | Electromagnetic pile driver and control method thereof | |
| CN108313857A (en) | A kind of permanent magnet direct-drive built-in type elevator | |
| JP7084547B2 (en) | Shear type slurry pulse generator | |
| CN109775583A (en) | Tower crane rotary drive mechanism, rotation control device and tower crane | |
| EP2501863A2 (en) | Permanent magnet direct drive drawworks | |
| Black et al. | Establishing a 50g-ton geotechnical centrifuge at the University of Sheffield | |
| CN108639985B (en) | Efficient composite brake mode alternating-current variable-frequency winch and lowering control method thereof | |
| CN211670759U (en) | Petroleum drilling electromagnetic brake based on direct current chopping technology | |
| CN216444853U (en) | Semi-direct-drive mine hoist of large permanent magnet speed reduction motor | |
| CN201345582Y (en) | Multi-stage cascade alternating current servo motor | |
| CN110171781B (en) | High-maintainability light alternating-current variable-frequency winch and control method thereof | |
| CN207819668U (en) | A kind of cutter head of shield machine mechanism that no frame permanent magnet synchronous motor directly drives | |
| CN219990548U (en) | Belt conveyor and bucket wheel machine | |
| CN217025141U (en) | Hoisting mechanism and crane | |
| CN219974500U (en) | Shield constructs screw machine front end axle induction system | |
| CN210780500U (en) | Permanent magnet coupler with braking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |