Remote control system for vertical derrick of workover rig

Abstract

The invention relates to the technical field of engineering construction, and discloses a workover rig vertical derrick remote control system comprising a remote control device used for distributing and receiving operation instructions and carrying out operation speed control and data monitoring; the handle control mechanism is in communication connection with the remote control device and is used for receiving an operation instruction and controlling the vertical placement of the derrick and the start and stop of the telescopic hydraulic operation handle through a steering engine executing mechanism; and the cylinder control system is in communication connection with the remote control device and is used for respectively controlling the opening and closing of the supporting rod cylinder and the two-layer bearing cylinder through at least two sets of three-position five-way electromagnetic valves so as to realize the locking of the vertical placement of the derrick. The technical scheme that a remote control device and a handle control mechanism are combined is adopted, and the effect that the derrick is accurately and remotely controlled to be erected is achieved. Compared with the scheme depending on manual operation in the prior art, errors of manual operation are avoided, the control accuracy and efficiency are improved, operators can be away from a high-risk operation area, and the safety risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction, and particularly to a remote control system for erecting and lowering the derrick of a workover rig. Background Art

[0002] The operation of erecting and lowering the derrick of a workover rig mostly relies on manual control, and the operator needs to manually adjust the erection, lowering and locking of the derrick. This method is prone to human operation errors, resulting in inaccurate derrick erection or operation delays. In contrast, the present invention combines a remote control device and a handle control mechanism, greatly improving the accuracy and convenience of operation and avoiding the problem of human errors. The operator can stay away from the high-risk operation area and reduce the safety risk.

[0003] In traditional technologies, the stability of the derrick erection process often depends on the design of the mechanical structure and manual intervention, but the aging of mechanical devices or design defects are likely to lead to unstable locking or operation risks. The existing solutions lack automatic control means, resulting in difficulties in timely discovery and handling once unstable locking or operation jams occur. The present invention, through the cooperation of a cylinder control system and a three-position five-way solenoid valve, can not only lock the derrick in real time but also ensure the stability after erection and lowering.

[0004] Traditional technologies often neglect the real-time monitoring of the pressure of the hydraulic system, resulting in failure to detect abnormal pressure in a timely manner, thereby increasing the risk of equipment damage. Especially in a high-pressure environment, the lack of effective detection means is likely to cause safety hazards. Different from this, the present invention combines a pressure monitoring system and an abnormal detection module, which can monitor the pressure change in real time and automatically terminate the erection and lowering operation when the pressure is abnormal, significantly improving the safety of the operation. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a remote control system for erecting and lowering the derrick of a workover rig, which solves the problem that the existing solutions lack automatic control means and it is difficult to timely discover and handle unstable locking or operation jams.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A remote control system for erecting and lowering the derrick of a workover rig, comprising: A remote control device, which is used for distributing and receiving operation instructions, and performing operation speed control and data monitoring; A handle control mechanism, which is communicatively connected with the remote control device, is used for receiving operation instructions, and controlling the start and stop of the derrick erection, lowering and telescopic hydraulic operation handle through a servo actuator; A cylinder control system, which is communicatively connected with the remote control device, and controls the opening and closing of a support cylinder and a second-layer load-bearing cylinder respectively through at least two sets of three-position five-way solenoid valves to realize the locking of the derrick erection and lowering; A pressure monitoring system, connected to the hydraulic cylinder control system, is used to remotely collect the hydraulic cylinder pressure data during the erection and lowering of the derrick, and control the termination of the erection and lowering operation when the pressure is abnormal.

[0007] Preferably, the remote control device includes a wireless remote control and a remote control signal receiver, and the wireless remote control sends control instructions to the remote control signal receiver through wireless communication.

[0008] Preferably, the wireless communication method is radio frequency communication, Bluetooth communication or 5G communication.

[0009] Preferably, the handle control mechanism includes a servo actuator, and the servo actuator drives and controls the start and stop of the hoisting and telescopic hydraulic operation handles through a motor, and has a real-time feedback function.

[0010] Preferably, the strut cylinder in the cylinder control system is used to support the derrick, and the second-layer load-bearing cylinder is used to provide the support force for the telescopic derrick of the second layer. The two sets of three-position five-way solenoid valves are respectively connected to the strut cylinder and the second-layer load-bearing cylinder.

[0011] Preferably, the cylinder control system includes a locking mechanism, and the locking mechanism is linked with the second-layer load-bearing cylinder to ensure the stability after the derrick erection and lowering are completed.

[0012] Preferably, the cylinder control system includes a locking mechanism, and the locking mechanism is linked with the second-layer load-bearing cylinder to ensure the stability after the derrick erection and lowering are completed.

[0013] Preferably, the pressure monitoring system includes an abnormality detection module, and the abnormality detection module is used to analyze the pressure data and control the termination of the erection and lowering operation when the guy wire is hung or jammed is detected.

[0014] Preferably, the remote control device includes a display screen, and the display screen is used to display the derrick erection and lowering state, the hydraulic cylinder pressure value and the abnormality warning information in real time.

[0015] Preferably, the remote control device is provided with an emergency stop button, and the emergency stop button is used to immediately cut off the control signal and terminate the derrick erection and lowering operation in case of an abnormal situation.

[0016] The present invention provides a remote control system for the erection and lowering of the derrick of a workover rig. It has the following beneficial effects: 1. The present invention adopts a technical solution combining a remote control device and a handle control mechanism, achieving the effect of accurately remotely controlling the derrick erection and lowering. Compared with the prior art that relies on manual operation, the present invention avoids the errors of manual operation, improves the accuracy and efficiency of operation. The operator can stay away from the high-risk operation area and reduce the safety risk.

[0017] 2. The present invention introduces a cylinder control system and controls the opening and closing of the support rod cylinder and the second - layer load - bearing cylinder through a three - position five - way solenoid valve, achieving a stable locking effect for the erection and placement of the derrick. Compared with the mechanical operation of the locking device in the prior art, the present invention effectively solves the problem of unstable derrick locking and ensures the safety of operation.

[0018] 3. Through the combination of a pressure monitoring system and an anomaly detection module, the present invention realizes real - time monitoring of the hydraulic cylinder pressure and automatically terminates the erection and placement operation when the pressure is abnormal. Different from the prior - art solutions that cannot detect pressure fluctuations in real time, the present invention can timely discover potential risks and effectively prevent equipment damage or accidents.

[0019] 4. The present invention adopts a wireless remote control method and is equipped with a display screen and an emergency stop button, achieving flexible and safe operation. Compared with the traditional manual operation system, the present invention not only improves the convenience of operation but also can quickly terminate the operation in case of anomalies, reducing potential risks. Brief Description of the Drawings

[0020] Figure 1 It is the system framework diagram of the present invention. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to the attached Figure 1 , the embodiment of the present invention provides a remote control system for the erection and placement of a workover rig derrick, including: A remote control device for distributing and receiving operation instructions, and performing operation speed control and data monitoring; A handle control mechanism communicatively connected to the remote control device for receiving operation instructions and controlling the start and stop of the derrick erection, placement, and telescopic hydraulic operation handle through a servo actuator; A cylinder control system communicatively connected to the remote control device and controlling the opening and closing of the support rod cylinder and the second - layer load - bearing cylinder respectively through at least two sets of three - position five - way solenoid valves to achieve the locking of the derrick erection and placement; A pressure monitoring system connected to the hydraulic cylinder control system for remotely collecting the hydraulic cylinder pressure data during the derrick erection and placement process and controlling the termination of the erection and placement operation when the pressure is abnormal.

[0023] Implementation of the remote control device The remote control device is one of the core parts of the present invention. It includes a wireless remote control and a remote control signal receiver. The wireless remote control is wirelessly connected to the remote control signal receiver through radio frequency communication, Bluetooth communication or 5G communication. The use of this wireless connection allows the operator to stay away from the site and ensure the safety of the working environment. The remote control can not only send control signals, but also receive status information during the derrick erection process, including operation speed, current status, etc.

[0024] The operator can control the speed of the entire derrick erection process through the remote control. By sending control signals, the system can achieve precise control of each actuator. When an emergency occurs, the remote control device can also trigger the emergency stop mechanism to ensure safe operation.

[0025] Implementation of handle control mechanism The handle control mechanism is used to receive operation instructions from the remote control device. It is connected to the remote control device through wireless or wired signals. The handle control mechanism includes a steering gear actuator, which is driven by a motor and is responsible for controlling the lifting of the derrick and the start and stop of the telescopic hydraulic operating handle. In this way, the operator can remotely adjust the height and angle of the derrick.

[0026] When the derrick is placed vertically, the handle control mechanism can accurately adjust the movement state of the derrick. Through the feedback signal, the handle control mechanism can report the current operation status in real time to ensure that the operator understands the details of the placing process. This design reduces manual intervention and improves the automation level of the operation.

[0027] Implementation of cylinder control system The function of the cylinder control system is to control the action of the strut cylinder and the second-layer bearing cylinder to ensure the locking of the derrick. The system controls the two cylinders respectively through two sets of three-position five-way solenoid valves. The strut cylinder is mainly used to support the derrick, while the second-layer bearing cylinder is used to bear the supporting force generated during the vertical placement process.

[0028] The cylinder control system not only ensures the stability of the derrick, but also adapts to different load and pressure conditions during the erection process. The system's independent cylinder control design can accurately adjust the derrick erection process, thereby avoiding accidents caused by overload or uneven load.

[0029] In the process of cylinder control, the design of the locking mechanism is particularly noteworthy. When the derrick is erected, the locking mechanism will automatically link with the second-layer load-bearing cylinder to ensure that the derrick remains stable without external intervention. This locking mechanism can effectively prevent the derrick from moving due to vibration or changes in the external environment.

[0030] Implementation of a pressure monitoring system The design of the pressure monitoring system enables the entire system to monitor the pressure changes of each hydraulic cylinder in real time during the erection and lowering process of the derrick. The system is equipped with at least two pressure sensors, which are respectively installed in the hydraulic circuits of the hoisting hydraulic cylinder and the second - layer telescopic hydraulic cylinder. The sensors continuously monitor the pressure changes and feedback the real - time data to the remote control device.

[0031] When the pressure is abnormal (such as the guy wire getting caught or jammed), the pressure monitoring system will analyze the data through the abnormal detection module and trigger the system stop signal. In this way, the system can avoid equipment damage or safety accidents caused by excessive pressure. This design enhances the safety during the derrick erection and lowering process, ensuring that the operator can quickly respond and stop any abnormal operations.

[0032] First of all, within the overall technical framework of the workover rig derrick erection and lowering remote control system of the present invention, step S1 involves the initial control process of the system, mainly including the signal transmission of the remote control device, the activation of the handle control mechanism, and the linkage response of the cylinder control system. This step plays a crucial role in the operation of the entire system. It determines the start conditions, signal flow, and linkage control of the execution mechanism during the derrick erection and lowering process.

[0033] Generally, for the derrick erection and lowering operation of the workover rig, it is necessary to ensure that the system is in a stable state, and at the same time, the signal interaction between the remote control device and the execution mechanism must be accurate to ensure the safety and reliability of the operation. In the present invention, the specific implementation of step S1 not only covers the sending and receiving of wireless remote control signals, but also includes the response mechanism of the handle control mechanism and the setting of the standby state of the cylinder control system. Therefore, this step is not only the starting point of the entire erection and lowering process, but also closely related to the subsequent action execution and status monitoring.

[0034] In this embodiment, the specific implementation of step S1 is as follows: In a possible implementation manner, the wireless remote controller of the remote control device is first activated, and the operation instructions are sent to the remote control signal receiver through radio frequency communication, Bluetooth communication, or 5G communication. After the remote control signal receiver analyzes the instructions, they are transmitted to the handle control mechanism. Optionally, after receiving the instructions, the servo actuator inside the handle control mechanism drives the motor to perform a preset action, making the hydraulic operation handle enter the standby state for subsequent derrick erection and lowering operations.

[0035] Specifically, after receiving the start signal, the hydraulic cylinder control system first performs pressure detection on the hoisting hydraulic cylinder and the telescopic hydraulic cylinder to ensure that both are in an initial safe state. In some embodiments, the hydraulic cylinder control system will first activate the pressure monitoring system so that the system can obtain the pressure data of the hoisting hydraulic cylinder and the telescopic hydraulic cylinder in real time and perform preset range verification. Generally, when the pressure monitoring system detects that the internal pressure value P of the hydraulic cylinder satisfies the following conditions, the system will enter the next operation: ; Where: is the minimum pressure threshold for the system to start safely; is the maximum allowable pressure for the normal operation of the hydraulic cylinder; represents the actual hydraulic cylinder pressure detected by the current pressure sensor.

[0036] In another possible implementation, if the hydraulic cylinder pressure fails to reach the preset range, the system will trigger the anomaly detection module, output an alarm signal, and send a prompt to the operator through the display screen of the remote control device to prevent misoperation. In some embodiments, the pressure monitoring system will calculate the pressure change rate , to ensure that the pressure change conforms to the preset working curve: ; Where: is the maximum safe pressure change rate set by the system to prevent the system from becoming unstable due to too rapid pressure rise; represents the pressure change rate.

[0037] As an option, after the system pressure detection is normal, the handle control mechanism will further activate the servo actuator to control the erection and placement angle of the derrick subsequently. In one possible implementation, the servo actuator will be adjusted in stages according to the set angle : ; Where: is the initial angle of the derrick; is the angle increment adjusted by the handle control mechanism.

[0038] In another embodiment, to ensure the control stability of the entire system, the remote control device receives feedback signals in real time and adjusts the signal output according to the actual situation. Generally, during the signal transmission process, to avoid communication interference, the system adopts a redundant coding method, such as Huffman Coding or Convolutional Coding, to improve the anti-interference ability of the signal.

[0039] In summary, step S1 not only involves the initial operation startup of the system, but also includes signal transmission, the response of the actuator, the feedback processing of pressure monitoring, and the pre-check of system security. Through these control measures, it can be ensured that the process of erecting and lowering the derrick can be carried out in a safe and stable state, providing a reliable basis for subsequent derrick lifting and locking operations.

[0040] In the remote control system for erecting and lowering the derrick of the workover rig of the present invention, step S2 follows step S1 immediately and involves the execution stage of the derrick erecting and lowering process. It mainly focuses on the precise operation of the handle control mechanism on the cylinder control system and ensures that the derrick is lifted and lowered under controlled conditions. In step S1, the system completes the initial signal transmission and pressure monitoring to ensure that the pressures of the hoisting cylinder and the second-layer telescopic cylinder are within a reasonable range. In step S2, the system will officially drive the cylinder control system based on the feedback data of step S1 to start the erection and lowering of the derrick. The implementation of this step not only involves the specific actions of the handle control mechanism, but also covers the coordinated work between the servo actuator and the cylinder control system, as well as the setting and adjustment of relevant control parameters.

[0041] In this embodiment, the specific implementation of step S2 is as follows: Generally, after receiving the operation signal confirmed in step S1, the handle control mechanism will start the servo actuator to drive the cylinder control system. As an option, the control signal of the servo actuator will be dynamically adjusted according to the current angle of the derrick and the target angle to make the cylinder control system respond synchronously according to the preset strategy: ; where: is the current derrick angle, detected by the angle sensor; is the preset target angle; is the angle increment required for system adjustment.

[0042] Specifically, in a possible implementation manner, the output torque of the servo actuator The following relationships need to be satisfied to ensure that the start and stop of the hydraulic operating handle can smoothly drive the lifting and telescopic hydraulic cylinders: ; Where: is the real-time output torque of the steering gear actuator; is the minimum torque threshold required to drive the hydraulic cylinder to act, and this value depends on the derrick weight and the hydraulic cylinder support force.

[0043] In some embodiments, after the hydraulic cylinder control system receives a control signal, it will first check the current force condition of the lifting hydraulic cylinder. If the force does not meet the standard, the system will automatically adjust the input pressure of the support rod hydraulic cylinder to match the target support force : ; Where: is the working pressure of the lifting hydraulic cylinder; is the support force required to be provided by the lifting cylinder; is the effective force-bearing area of the hydraulic cylinder.

[0044] As an option, if the pressure of the lifting hydraulic cylinder is insufficient, the system can increase the input pressure through the adjustment of the three-position five-way solenoid valve to make it meet the support requirements. Specifically, the opening degree of the solenoid valve can be adjusted according to the following formula: ; Where: is the initial opening degree of the solenoid valve; is the response coefficient of the solenoid valve; is the error between the current pressure and the target pressure.

[0045] In another possible implementation, the pressure adjustment strategy of the second-layer load-bearing cylinder is similar to that of the support rod cylinder, but its goal is to provide the vertical placement support force to ensure that the derrick will not shift or become unstable during vertical placement: ; Where: is the working pressure of the second-layer load-bearing cylinder; is the vertical placement support force required to be provided by the second-layer load-bearing cylinder; is the effective force-bearing area of the second-layer load-bearing cylinder.

[0046] As an option, after the hydraulic cylinder pressure reaches the target value, the system will detect the lifting state of the derrick and ensure that the erection and lowering process conforms to the preset trajectory through the feedback mechanism of the pressure monitoring system. In some embodiments, the pressure monitoring system will detect the real-time pressure change of the hydraulic cylinder , to determine whether there is any abnormal situation: ; Wherein: is the maximum allowable pressure change rate of the hydraulic cylinder; is the real-time detected pressure change rate.

[0047] In a possible implementation, if the system detects that exceeds the set value, it indicates that the force on the hydraulic cylinder may be abnormal, such as hydraulic cylinder jamming or sudden change of external load. At this time, the system will automatically trigger the abnormal detection module and send a warning message to the operator through the remote control device display screen.

[0048] In addition, in some embodiments, in order to ensure the stability of the derrick erection and lowering, the system can perform synchronous control in combination with the locking mechanism. Generally, the locking mechanism will be activated after the second-layer load-bearing cylinder completes the erection and support to ensure the stable state after the derrick erection and lowering.

[0049] In summary, step S2 mainly involves the linkage adjustment of the hydraulic cylinder control system by the handle control mechanism, including torque control of the servo actuator, cylinder pressure adjustment, solenoid valve response optimization, and real-time feedback of the pressure monitoring system, etc. The implementation of this step ensures that the derrick can complete the erection and lowering under precise control, providing a reliable technical basis for subsequent locking and stability maintenance.

[0050] In the aforementioned step S2, the lifting operation of the workover rig to erect and lower the derrick has been completed through the cooperation of the handle control mechanism and the hydraulic cylinder control system, and the derrick has been in the predetermined position. Next, the function of step S3 is to monitor the erection state of the derrick and conduct a stability inspection to ensure that the force on the derrick is uniform during the entire erection and lowering process and there is no deviation or instability. This step not only involves re-detecting the hydraulic cylinder pressure but also includes the stability assessment of the overall state of the derrick to ensure that it can maintain a safe and reliable working state for a long time after the operation is completed.

[0051] Generally, in step S3, it is necessary to ensure that the derrick will not be affected by changes in external loads after being erected vertically, and at the same time, the cylinder system should always remain within the normal pressure range during this process to prevent system failures caused by overloading or cylinder damage. This step is mainly monitored and adjusted through a feedback mechanism to ensure the subsequent locking of the derrick and the stability of the entire system.

[0052] In this embodiment, the specific implementation of step S3 is as follows: First, the system will perform another pressure verification based on the cylinder pressure data provided in step S2. Specifically, the cylinder control system will detect the working pressures of the support rod cylinder and the second-layer load-bearing cylinder, and the pressure values will be continuously fed back through pressure sensors and . Generally, the system will ensure that the cylinder pressure is within the safe range according to the following formula: ; Where: is the actual working pressure of the support rod cylinder; is the actual working pressure of the second-layer load-bearing cylinder; and are the maximum and minimum pressure thresholds for the safe operation of the cylinder, respectively.

[0053] As an option, when the pressure value deviates from the normal range, the system will adjust the cylinder through solenoid valve control to ensure that the cylinder pressure returns to the normal working range. Specifically, the opening degree of the solenoid valve will be dynamically adjusted according to the current pressure error: ; Where: is the initial opening degree of the solenoid valve; is the response coefficient of the solenoid valve; is the currently detected pressure error.

[0054] Specifically, when the pressure value cannot be restored to the normal range, the system will automatically trigger an early warning mechanism, output an alarm, and pause the derrick erection operation. At this time, the operator can further check the equipment status according to the system prompt to avoid serious equipment failures or safety hazards. In some embodiments, step S3 also includes checking the stability of the derrick. Specifically, the system will use an angle sensor to continuously detect the inclination angle of the derrick , and compare it with the preset target angle Compare. If the angle error exceeds the preset range, the automatic adjustment program will be started, and the derrick angle will be adjusted to the target value through the servo control mechanism. At this time, the system will calculate the adjusted angle increment accurately: ; where: is the current derrick angle; is the target angle; is the angle error.

[0055] As an option, the derrick stability monitoring can also be combined with external sensors for vibration detection. For example, when the derrick experiences a large vibration, the vibration sensor will output a corresponding vibration signal , after comparing this signal with the threshold value, if it exceeds the safe range, the system will automatically trigger an emergency stop and lock the derrick: ; where: is the vibration signal detected in real time; is the vibration threshold set by the system.

[0056] In another embodiment, the stability of the derrick can also be monitored in real time through a load sensor to ensure that the load borne by the derrick does not exceed the maximum load capacity designed by the system. At this time, the output signal of the load sensor will be compared with the maximum load : ; where: is the actual load borne by the current derrick; is the designed maximum load.

[0057] In some embodiments, step S3 will also introduce a system self-check function to ensure the working status of the sensor and the accuracy of its data. If the sensor fails or the data is abnormal, the system will detect it in time and issue a warning to avoid misoperation caused by the failure.

[0058] In summary, the core objective of step S3 is to strictly monitor and inspect the stability of the derrick after it is erected vertically to ensure that the cylinder pressure, derrick angle, and load are all within the safe range during the entire operation process. Through this series of monitoring and adjustment measures, the present invention ensures the stability of the derrick after it is erected vertically and effectively prevents dangers caused by external factors or equipment failures.

[0059] In the aforementioned step S3, the stability of the derrick after erection has been effectively monitored and adjusted, and the cylinder pressure, derrick angle, and load are all within the safe range. On this basis, the objective of step S4 is to fix the derrick at a predetermined position through a locking mechanism and conduct a final status confirmation. This step not only ensures that the derrick can work stably after erection but also involves the activation of the locking mechanism and the confirmation of the locked state to prevent accidental displacement or instability of the derrick during subsequent operations.

[0060] Generally, the implementation of step S4 is based on the stability monitoring in step S3. When the derrick is stable and all working pressures, angles, etc. are within the safe range, the locking mechanism will be activated to ensure that the derrick remains stationary during subsequent operations. The key to this step is to firmly fix the derrick at the erected position by controlling the locking mechanism and prevent any unnecessary adjustments or displacements. In some embodiments, the locking device may include a mechanical locking mechanism, a hydraulic locking device, or an electric locking device, and its working principle varies according to the specific design.

[0061] In this embodiment, the specific implementation method of step S4 is as follows: First, in step S3, the system has confirmed the stability of the derrick and ensured that the cylinder pressure is within the normal range through a pressure feedback mechanism. On this basis, the locking mechanism starts to work. Generally, the locking mechanism includes a locking device that fixes the derrick through electric control or pneumatic control. Specifically, the locking device tightly combines the lifting mechanism of the derrick with the fixed position through a mechanical device or a hydraulic device, thereby ensuring that the derrick can no longer move.

[0062] As an option, the locking mechanism may adopt hydraulic cylinder control, and the locking device is fixed to the designated position of the derrick through a hydraulic driving device. At this time, the working pressure of the hydraulic cylinder will be adjusted as needed to ensure that the locking device can firmly fix the derrick: ; where: is the working pressure of the locking hydraulic cylinder; is the fixing force required for the locking device; is the effective stress area of the hydraulic cylinder.

[0063] Specifically, in one possible implementation, the hydraulic control system adjusts the opening degree of the locking hydraulic cylinder through a solenoid valve to achieve the required working pressure. When the hydraulic cylinder reaches the set pressure, the locking device will be fully activated, and the derrick enters the fixed state. In this state, the derrick can no longer be easily moved or adjusted, thus ensuring the stability of the derrick.

[0064] As another option, the locking mechanism can also be fixed by a mechanical device. Specifically, the system may adopt a mechanical device with a locking function. The locking device is controlled by an electric motor to closely combine the lock with the derrick base to avoid any movement caused by external forces. In this implementation, the stability and reliability of the locking device are crucial. Therefore, the material and design of the locking device need to be able to withstand the weight of the derrick and external loads.

[0065] In some embodiments, the locking device may be designed as a dual protection mechanism, combining hydraulic and mechanical locking devices. For example, after the derrick is fixed, the mechanical locking device can serve as an auxiliary safety device to provide additional stability in the case of hydraulic locking failure. This design can increase the redundancy of the locking system and enhance the safety of the overall system.

[0066] Specifically, when the hydraulic system or the mechanical system completes the locking operation, the system will provide feedback through sensors to confirm whether the locking state has taken effect. The sensors will detect the state of the locking device in real time and feed back the signals to the control system. If the locking device fails to be fully activated or malfunctions, the control system will automatically trigger an alarm to prompt the operator to check and repair.

[0067] In some embodiments, to ensure the stability and safety of the derrick, the confirmation of the locking state may also include the detection of current and voltage. By detecting the current value of the locking device and voltage value , the system can confirm whether the locking device is in a normal working state. At this time, the relationship between the locking current and voltage can be expressed by the following formula: ; where: is the voltage of the locking device; is the current of the locking device; is the resistance of the locking device.

[0068] Through this detection mechanism, the system can timely detect the faults of the locking device and make automatic adjustments or reports when problems occur.

[0069] In summary, the key to step S4 is to ensure that the derrick is firmly fixed after erection through an accurate locking mechanism, preventing any deviation caused by external forces. Through the coordinated operation of hydraulic or mechanical locking devices and combined with the feedback of sensors, it is ensured that the derrick remains stable and safe during long-term operation. This process provides a solid guarantee for the stability of the entire system and further improves the safety and reliability of the operation.

[0070] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote control system for erecting a derrick of a workover rig, characterized in that: include: Remote control device, used to distribute and receive operating instructions, and to perform operating speed control and data monitoring; A handle control mechanism is connected to the remote control device for receiving operation instructions and controlling the start and stop of the derrick erection and telescopic hydraulic operation handle through the steering gear actuator; The cylinder control system is connected to the remote control device and controls the separation and connection of the support cylinder and the second-layer load-bearing cylinder respectively through at least two sets of three-position five-way solenoid valves to achieve the locking of the vertical placement of the derrick; The pressure monitoring system is connected to the hydraulic cylinder control system and is used to remotely collect the hydraulic cylinder pressure data during the derrick erection process and control the termination of the erection operation when the pressure is abnormal.

2. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The remote control device comprises a wireless remote controller and a remote control signal receiver, and the wireless remote controller sends a control instruction to the remote control signal receiver via wireless communication.

3. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The wireless communication method is radio frequency communication, Bluetooth communication or 5G communication.

4. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The handle control mechanism includes a steering gear actuator, which controls the start and stop of the lifting and telescopic hydraulic operating handle through motor drive and has a real-time feedback function.

5. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The strut cylinder in the cylinder control system is used to support the derrick, the second-layer load-bearing cylinder is used to provide support force for the second-layer telescopic derrick, and the two sets of three-position five-way solenoid valves are respectively connected to the strut cylinder and the second-layer load-bearing cylinder.

6. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The cylinder control system includes a locking mechanism, which is linked with the second-layer load-bearing cylinder to ensure the stability of the derrick after erection.

7. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The pressure monitoring system includes at least two pressure sensors, which are respectively installed in the hydraulic circuits of the lifting cylinder and the second-layer telescopic cylinder, and are used to monitor the pressure changes of the hydraulic cylinders in real time.

8. The remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The pressure monitoring system includes an abnormality detection module, which is used to analyze pressure data and control the termination of the vertical release operation when the guy line is detected to be hung or stuck.

9. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The remote control device comprises a display screen, and the display screen is used to display the vertical state of the derrick, the hydraulic cylinder pressure value and abnormal warning information in real time.

10. A remote control system for erecting a derrick of a workover rig according to claim 1, characterized in that: The remote control device is provided with an emergency stop button, which is used to immediately cut off the control signal and terminate the derrick erection operation when an abnormal situation occurs.

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