Automatic unhooking device of pile delivery device and automatic unhooking method thereof

Abstract

The application provides an automatic unhooking device and method of a pile delivery device hoist, belonging to the technical field of pile delivery device hoist unhooking, when the pile delivery device is lifted to a single pile flange surface fixing position, an operator remotely sends an automatic unhooking signal, a signal receiving device on the automatic unhooking device receives the remote control signal sent by the operator and transmits to a control unit, after the control unit receives the remote control signal, the received signal is analyzed and processed, the control unit sends an action instruction to an execution device according to the analysis result, after the execution device receives the action instruction, the automatic unhooking assembly performs hydraulic unhooking, so that the cross beam and the lower annular lifting belt connected to the pile delivery device are separated, and the automatic unhooking of the pile delivery device hoist is realized. The application has the advantages of simple structure, convenient operation, automatic unhooking, improved construction efficiency and safety.

Description

Technical Field

[0001] This invention belongs to the field of pile driver lifting tool unhooking technology, specifically relating to an automatic unhooking device and method for a pile driver lifting tool. Background Technology

[0002] In the wind power foundation installation industry, pile drivers are used to drive pile foundations into the ground. Traditional pile driver lifting equipment requires manual unhooking during the lifting process, which is not only inefficient but also increases the labor intensity of workers and poses certain safety hazards. Especially in complex environments, such as high-altitude operations, the risk of manual operation is significant, with the potential for falls from heights. Therefore, how to achieve automatic unhooking of pile driver lifting equipment to improve construction efficiency and reduce worker labor intensity and operational risks is a pressing issue that needs to be addressed. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an automatic unhooking device for pile driving lifting equipment. It has a simple structure, is easy to operate, and can achieve automatic unhooking, thereby improving construction efficiency and safety.

[0004] The present invention employs the following technical solution.

[0005] An automatic unhooking method for a pile driver lifting device includes: When the pile driver is lifted to the fixed position on the single pile flange, the operator remotely sends an automatic unhooking signal. The signal receiving device on the automatic unhooking device receives the remote control signal sent by the operator and transmits it to the control unit. After receiving the remote control signal, the control unit analyzes and processes the signal. Based on the analysis result, the control unit sends an action command to the actuator. After receiving the action command, the actuator executes the automatic unhooking component to hydraulically release the hook, thereby separating the cross beam from the lower ring sling connected to the pile driver, realizing the automatic unhooking of the pile driver lifting device.

[0006] Furthermore, the method for the control unit to parse and process the received remote control signal specifically includes: The operator presses the automatic unhooking button on the remote control terminal and sends a wireless remote control signal; The signal receiving device installed on the automatic unhooking assembly captures the wireless remote control signal in real time via a built-in antenna. The signal receiving device filters, amplifies, and performs anti-interference processing on the remote control signal, filtering out noise and interference signals in the offshore wind power construction environment; The processed valid signal is converted into a standard electrical signal and stably transmitted to the signal input interface of the control unit through the signal line; The control unit continuously collects electrical signals from the signal receiving device through the input interface; The control unit performs level identification and encoding verification on the signal to determine whether the signal is a valid uncoupling command; the control unit compares and matches the received signal with the preset command code. If a match is found, the command is deemed a valid unhooking instruction. If there is a mismatch, the signal is considered invalid and no action is taken.

[0007] Furthermore, the method by which the control unit sends action commands to the actuator based on the analysis results specifically includes: After confirming that the command is valid and the mechanism is in normal condition, the control unit outputs a high-level or control pulse signal as an action command. The control unit transmits action commands to the control terminal of the actuator through the output interface; Upon receiving the command, the actuator immediately activates, the hydraulic system starts, and the hook release action is completed. After the action is completed, the control unit can delay and reset the output signal to restore the actuator to standby state and wait for the next instruction.

[0008] An automatic unhooking device for a pile driver lifting tool includes: The crossbeam structure is used to support the entire automatic unhooking assembly. The pin assembly is installed on the upper lifting lug of the cross beam structure to connect the cross beam structure with the upper annular sling. The automatic unhooking assembly is installed on the pin assembly below the cross beam structure. The cross beam structure and the lifting lug of the pile driver are connected by the annular sling for attaching the lifting device of the pile driver.

[0009] Furthermore, the cross-beam structure specifically includes: The main body of the cross-beam structure; The upper lifting lug is welded to the top surface of the main body of the cross beam structure. The upper lifting lug is used to install the upper pin assembly to connect the upper ring lifting strap. The lower pin seat is welded to the bottom surface of the cross beam structure and is used to install the automatic unhooking assembly and the pin assembly below. The lifting tool connection interface is used to reserve a connection position for matching the lifting lugs of the pile driver lifting tool, and is connected through the lower annular lifting strap.

[0010] Furthermore, the automatic unhooking assembly includes a signal receiving device, a control unit, and an actuating device connected in sequence.

[0011] Furthermore, the signal receiving device is a wireless signal receiver or a wired signal receiving terminal; the control unit is a PLC controller, an industrial microcontroller, or an embedded control board; and the actuator is a hydraulic cylinder or hydraulic actuator with a hydraulic solenoid valve assembly.

[0012] Furthermore, the actuator also includes a hook, a locking tongue, a return spring, a pin, and a limiting plate; The latch has a pin hole in the middle. The pin passes through the latch and the hook, allowing the latch to rotate around the pin to lock or unlock. The return spring connects the locking tongue and the hook body; One end of the return spring is hung on the tail of the locking tongue, and the other end is fixed to the side wall of the hook or the spring seat; The limiting plate is fixed to the hook body; The limiting plate is welded or bolted to the movement path of the locking tongue on the hook body; The upper part of the hook is equipped with lifting lugs, which are connected to the cross beam structure via pins; The lower part of the hook body is the hook opening, which is used to attach the lower ring sling.

[0013] Furthermore, the pin assembly specifically includes: Pin; The pin has shoulders or limiting steps at both ends; The bushing or sleeve is fitted over the pin; Cotter pins or anti-loosening pins are installed in the holes at the ends of the pin shafts.

[0014] Furthermore, the pin of the pin assembly passes sequentially through the lug hole of the cross beam structure, the bushing, the annular sling, or the connection hole of the automatic unhooking assembly; one end of the pin's shoulder abuts against the outside of the lug to achieve axial positioning; the other end of the pin is inserted into a cotter pin or anti-loosening pin; and shims are used to finely adjust the gap between the lug and the connector.

[0015] The beneficial effects of the present invention are as follows: Compared with the prior art, the technical effects of the present invention include: The main objective of this invention is to provide an automatic unhooking technology for pile driver lifting devices to solve the aforementioned problems. Through a series of technical solutions, the lifting device is automatically unhooked after the pile driver completes the pile driving operation, thereby greatly improving work efficiency and operational safety. Attached Figure Description

[0016] Figure 1 This is a front view of the automatic unhooking device of the pile driver lifting tool described in this invention; Figure 2 This is a top view of the automatic unhooking device of the pile driver lifting tool described in this invention; Explanation of reference numerals in the attached drawings: 1. Upper ring sling; 2. Pin assembly; 3. Cross beam structure; 4. Automatic release assembly; 5. Lower ring sling; 6. Bow-shaped shackle. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, any other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0018] The present invention discloses an automatic unhooking method for a pile driver lifting device, comprising: When the pile driver is lifted to the fixed position on the single pile flange, the operator remotely sends an automatic unhooking signal. The signal receiving device on the automatic unhooking device receives the remote control signal sent by the operator and transmits it to the control unit. After receiving the remote control signal, the control unit analyzes and processes the signal. Based on the analysis result, the control unit sends an action command to the actuator. After receiving the action command, the actuator executes the automatic unhooking component to hydraulically release the hook, thereby separating the cross beam from the lower ring sling connected to the pile driver, realizing the automatic unhooking of the pile driver lifting device.

[0019] In a preferred but non-limiting embodiment of the present invention, the method for parsing and processing the received remote control signal after the control unit receives the signal specifically includes: The operator presses the automatic unhooking button on the remote control terminal to send a wireless remote control signal (radio frequency signal / digital encoded signal). The signal receiving device installed on the automatic unhooking assembly captures the wireless remote control signal in real time via a built-in antenna. The signal receiving device filters, amplifies, and performs anti-interference processing on the remote control signal, filtering out noise and interference signals in the offshore wind power construction environment; The processed valid signal is converted into a standard electrical signal and stably transmitted to the signal input interface of the control unit through the signal line; The control unit continuously collects electrical signals from the signal receiving device through the input interface; The control unit performs level identification and encoding verification on the signal to determine whether the signal is a valid uncoupling command; the control unit compares and matches the received signal with the preset command code. If a match is found, the command is deemed a valid unhooking instruction. If there is a mismatch, the signal is considered invalid and no action is taken.

[0020] After the control unit completes signal analysis, it enters the action preparation state and can selectively output status feedback (such as ready).

[0021] In a preferred but non-limiting embodiment of the present invention, the method by which the control unit sends an action command to the execution device based on the analysis result specifically includes: After confirming that the command is valid and the mechanism is in normal condition, the control unit outputs a high-level or control pulse signal as an action command. The control unit transmits the action command to the control end of the actuator (hydraulic solenoid valve) through the output interface. Upon receiving the command, the actuator immediately activates, the hydraulic system starts, and the hook release action is completed. After the action is completed, the control unit can delay and reset the output signal to restore the actuator to standby state and wait for the next instruction.

[0022] The automatic disengagement of the pile driver lifting device occurs during the installation process of the pile driver in the single pile construction process, which is executed sequentially as follows: The process includes: crane vessel entry, pile stabilization platform installation, sling installation, steel pipe pile lifting and turning, pile driving, pile stabilization, pile top flange level measurement, pile driver installation, pile driving with hammer, pile driver removal, pile stabilization platform removal, inspection and acceptance, auxiliary component installation, inspection and acceptance, and completion of single pile driving construction.

[0023] like Figure 1 and Figure 2 As shown, the automatic unhooking device for a pile driver lifting tool according to the present invention includes: Cross beam structure 3 is used to support the entire automatic unhooking assembly; The pin assembly 2 is installed on the upper lifting lug of the cross beam structure 3 to connect the cross beam structure with the upper annular sling 1. The automatic unhooking assembly 4 is installed on the pin assembly 2 below the cross beam structure 3. The cross beam structure 3 is connected to the lifting lug of the pile driver by the annular sling for attaching the lifting device of the pile driver.

[0024] In a preferred but non-limiting embodiment of the present invention, the cross beam structure 3 specifically includes: The main body of the cross beam structure, which can be a Q355B welded cross beam, bears the overall support, stress and component integration, and serves as the load-bearing skeleton of the automatic unhooking device of the entire pile driver lifting tool; The upper lifting lug is welded to the top surface of the cross beam structure. The upper lifting lug is used to install the upper pin assembly 2 to connect the upper annular lifting strap 1. The lower pin seat is welded to the bottom surface of the cross beam structure body and is used to install the automatic unhooking assembly and the lower pin assembly 2; The lifting tool connection interface is used to reserve a connection position for matching the lifting lug of the pile driver lifting tool, and is connected through the lower annular lifting strap 5.

[0025] The upper lifting lug is installed through the pin assembly, and the pin passes through the lifting lug and the upper annular sling to form the top lifting load-bearing node; the main body of the cross beam structure is integrally welded, and the weld meets the strength requirements for wind power installation, ensuring rigidity and stability; the automatic unhooking assembly is installed on the lower pin seat of the main body of the cross beam structure through the pin, forming a detachable mechanical interface with the main body of the cross beam structure; the lower part of the annular sling is connected to the automatic unhooking assembly, and the sling is connected to the pile driver lifting lug via the bow-shaped shackle 6.

[0026] In a preferred but non-limiting embodiment of the present invention, the automatic unhooking component 4 includes a signal receiving device, a control unit, and an execution device connected in sequence.

[0027] In a preferred but non-limiting embodiment of the present invention, the signal receiving device serves to receive remote control signals from the operator; the signal receiving device is a wireless signal receiver (433M / data radio / industrial WiFi) or a wired signal receiving terminal; the signal receiving device is a remote control receiver, responsible for hearing the remote control signal's unhooking command; the control unit serves to receive, analyze, and issue action commands to the remote control signal. The control unit is a PLC controller, an industrial microcontroller, or an embedded control board; the actuator serves to receive the action command and complete the hydraulic unhooking action. The actuator is a hydraulic cylinder with a hydraulic solenoid valve assembly or a hydraulic actuator mechanism.

[0028] In a preferred but non-limiting embodiment of the present invention, the actuator further includes a hook, a locking tongue, a return spring, a pin, and a limiting plate; The latch has a pin hole in the middle. The pin passes through the latch and the hook, allowing the latch to rotate around the pin to lock or unlock. The return spring connects the locking tongue and the hook body; One end of the return spring is hung on the tail of the locking tongue, and the other end is fixed to the side wall of the hook or the spring seat; The spring is always in a tensile state, keeping the locking tongue normally closed and locked.

[0029] The limiting plate is fixed to the hook body; The limiting plate is welded or bolted to the movement path of the locking tongue on the hook body to limit excessive rotation of the locking tongue and only allow it to swing within a safe angle. The hook body is a monolithic load-bearing base; The upper part of the hook is equipped with lifting lugs, which are connected to the cross beam structure via pins; The lower part of the hook body is the hook opening, which is used to attach the lower ring sling.

[0030] Insert the locking bolt into the mounting slot of the hook body; use a pin to connect the locking bolt and the hook body to form a rotatable joint. Install a return spring to pull the latch to close it; install a limit plate on the hook body to limit the maximum opening angle of the latch; the upper part of the hook body is connected to the base of the automatic unhooking assembly via a pin.

[0031] The hydraulic cylinder then pushes the tail of the locking tongue, and the locking tongue rotates around the pin to open until the sling comes off. The hydraulic cylinder depressurizes, the return spring pulls back the locking tongue until the locking tongue is closed, and the limit plate limits the movement.

[0032] In other words, the mechanical mechanism of the automatic unhooking assembly consists of a hook body, a locking tongue, a return spring, a pin, and a limiting plate. The locking tongue is hinged to the hook body via the pin and can rotate around the pin. The two ends of the return spring are connected to the locking tongue and the hook body respectively, keeping the locking tongue in a normally closed state. The limiting plate is fixed to the hook body and is used to limit the rotation angle of the locking tongue. The upper part of the hook body is connected to the cross beam via the pin, and the lower part is used to hang the ring sling.

[0033] In a preferred but non-limiting embodiment of the present invention, the pin assembly specifically includes: The pin is a solid round shaft made of high-strength alloy structural steel, which meets the heavy load requirements for wind turbine installation. The pin has shoulders or limiting steps at both ends to prevent axial movement; The bushing or sleeve is fitted over the pin to reduce wear between the lifting lug and the pin, thus extending its service life. Cotter pins or anti-loosening pins are installed in the holes at the ends of the pins to prevent the pins from coming loose and to ensure a safe connection.

[0034] Shims or washers are used to adjust the clearance, distribute pressure, and prevent the lifting lug from making direct hard contact with the pin.

[0035] Dustproof or sealing components are used in offshore wind power applications to prevent seawater and sediment from entering the hinge joint.

[0036] In a preferred but non-limiting embodiment of the present invention, the pin of the pin assembly passes sequentially through the lug hole of the cross beam structure, the bushing, the annular sling, or the connecting hole of the automatic unhooking assembly; one end of the pin's shoulder abuts against the outside of the lug to achieve axial positioning; the other end of the pin is inserted into a cotter pin or anti-loosening pin to lock the pin and prevent rotation and disengagement; a shim is used to finely adjust the gap between the lug and the connecting piece to ensure flexible rotation without jamming.

[0037] The upper pin assembly connects the upper lugs of the crossbeam structure to the upper ring sling.

[0038] The lower pin assembly connects the lower part of the crossbeam structure to the automatic disengagement assembly.

[0039] With the continuous development of wind resources in my country, the trend of wind turbines developing towards higher and larger dimensions is becoming increasingly apparent. Due to the limitations of monopile driving, the installation method is singular, employing large crane vessels equipped with large hydraulic hammers for pile driving, utilizing auxiliary platforms for positioning and assisting pile driving, and using hydraulic hammers to drive the pile into place. Traditional pile driver lifting devices require manual unhooking during the lifting process, which is not only inefficient but also poses safety hazards. The automatic unhooking device for the pile driver lifting device of this invention has the following advantages: 1. High safety: The automatic unhooking system can reduce human error and risk, and lower the probability of accidents.

[0040] 2. High efficiency: The automatic unhooking system can quickly and accurately complete the tasks of pile driving and unhooking, improving the efficiency of hoisting operations.

[0041] 3. High adaptability: It has a wide range of applications and can be widely used in various types of pile driver lifting tools, thus having a broad range of applications.

[0042] 4. Easy maintenance: The automatic unhooking system adopts a modular design, which is easy to disassemble, install and maintain.

[0043] Automatic unhooking devices for pile driving lifting equipment are widely used in construction engineering, bridge engineering, equipment installation, and other fields. Especially in large-scale projects, automatic unhooking devices can improve the safety and efficiency of lifting operations, shorten project cycles, and reduce costs. Automatic unhooking systems can avoid safety accidents caused by human error, ensuring the safety of construction personnel. Automatic unhooking systems can reduce the labor intensity of workers, decrease reliance on skilled workers, and lower labor costs. Automatic unhooking systems can quickly and accurately complete pile driving and unhooking tasks, improving the efficiency of lifting operations and shortening project cycles. Automatic unhooking systems can reduce cost pressures caused by equipment damage and rising labor costs, improving the economic benefits of enterprises.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic unhooking method for a pile driver lifting device, characterized in that, include: When the pile driver is lifted to the fixed position on the single pile flange, the operator remotely sends an automatic unhooking signal. The signal receiving device on the automatic unhooking device receives the remote control signal sent by the operator and transmits it to the control unit. After receiving the remote control signal, the control unit analyzes and processes the signal. Based on the analysis result, the control unit sends an action command to the actuator. After receiving the action command, the actuator executes the automatic unhooking component to hydraulically release the hook, thereby separating the cross beam from the lower ring sling connected to the pile driver, realizing the automatic unhooking of the pile driver lifting device.

2. The automatic unhooking method for the pile driver lifting device according to claim 1, characterized in that, The method for parsing and processing the received remote control signal after the control unit receives it specifically includes: The operator presses the automatic unhooking button on the remote control terminal and sends a wireless remote control signal; The signal receiving device installed on the automatic unhooking assembly captures the wireless remote control signal in real time via a built-in antenna. The signal receiving device filters, amplifies, and performs anti-interference processing on the remote control signal, filtering out noise and interference signals in the offshore wind power construction environment; The processed valid signal is converted into a standard electrical signal and stably transmitted to the signal input interface of the control unit through the signal line; The control unit continuously collects electrical signals from the signal receiving device through the input interface; The control unit performs level identification and encoding verification on the signal to determine whether the signal is a valid uncoupling command; the control unit compares and matches the received signal with the preset command code. If a match is found, the command is deemed a valid unhooking instruction. If there is a mismatch, the signal is considered invalid and no action is taken.

3. The automatic unhooking method for the pile driver lifting device according to claim 2, characterized in that, The method by which the control unit sends action commands to the actuator based on the analysis results specifically includes: After confirming that the command is valid and the mechanism is in normal condition, the control unit outputs a high-level or control pulse signal as an action command. The control unit transmits action commands to the control terminal of the actuator through the output interface; Upon receiving the command, the actuator immediately activates, the hydraulic system starts, and the hook release action is completed. After the action is completed, the control unit can delay and reset the output signal to restore the actuator to standby state and wait for the next instruction.

4. An automatic unhooking device for a pile driver lifting tool, characterized in that, include: The crossbeam structure is used to support the entire automatic unhooking assembly. The pin assembly is installed on the upper lifting lug of the cross beam structure to connect the cross beam structure with the upper annular sling. The automatic unhooking assembly is installed on the pin assembly below the cross beam structure. The cross beam structure and the lifting lug of the pile driver are connected by the annular sling for attaching the lifting device of the pile driver.

5. The automatic unhooking device for the pile driver lifting tool according to claim 4, characterized in that, The cross-beam structure specifically includes: The main body of the cross-beam structure; The upper lifting lug is welded to the top surface of the main body of the cross beam structure. The upper lifting lug is used to install the upper pin assembly to connect the upper ring lifting strap. The lower pin seat is welded to the bottom surface of the cross beam structure and is used to install the automatic unhooking assembly and the pin assembly below. The lifting tool connection interface is used to reserve a connection position for matching the lifting lugs of the pile driver lifting tool, and is connected through the lower annular lifting strap.

6. The automatic unhooking device for the pile driver lifting tool according to claim 5, characterized in that, The automatic unhooking assembly includes a signal receiving device, a control unit, and an actuating device connected in sequence.

7. The automatic unhooking device for the pile driver lifting tool according to claim 6, characterized in that, The signal receiving device is a wireless signal receiver or a wired signal receiving terminal; the control unit is a PLC controller, an industrial microcontroller, or an embedded control board; the actuator is a hydraulic cylinder or a hydraulic actuator with a hydraulic solenoid valve assembly.

8. The automatic unhooking device for the pile driver lifting tool according to claim 7, characterized in that, The actuator also includes a hook, a locking tongue, a return spring, a pin, and a limit plate; The latch has a pin hole in the middle. The pin passes through the latch and the hook, allowing the latch to rotate around the pin to lock or unlock. The return spring connects the locking tongue and the hook body; One end of the return spring is hung on the tail of the locking tongue, and the other end is fixed to the side wall of the hook or the spring seat; The limiting plate is fixed to the hook body; The limiting plate is welded or bolted to the movement path of the locking tongue on the hook body; The upper part of the hook is equipped with lifting lugs, which are connected to the cross beam structure via pins; The lower part of the hook body is the hook opening, which is used to attach the lower ring sling.

9. The automatic unhooking device for the pile driver lifting tool according to claim 8, characterized in that, The pin assembly specifically includes: Pin; The pin has shoulders or limiting steps at both ends; The bushing or sleeve is fitted over the pin; Cotter pins or anti-loosening pins are installed in the holes at the ends of the pin shafts.

10. The automatic unhooking device for the pile driver lifting tool according to claim 9, characterized in that, The pin of the pin assembly passes sequentially through the lug hole of the cross beam structure, the bushing, the ring-shaped sling, or the connection hole of the automatic release assembly; one end of the pin's shoulder abuts against the outside of the lug to achieve axial positioning; the other end of the pin is inserted into a cotter pin or anti-loosening pin; the gap between the lug and the connector is finely adjusted using shims.

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